* Posts by Grikath

1538 posts • joined 9 Feb 2012

Intel counters AMD’s big-cache PC chip with 5.5GHz 16-core rival

Grikath

Re: Let's Qualify that 5.5GHz Figure

For gaming purposes, it'd actually be the GPU that makes your wallet weep. Purchasing and using it.

Although for people buying this stuff, "money" is about the last consideration coming into the equation anyway.

Crack team of boffins hash out how e-scooters should sound – but they need your help*

Grikath

Re: Missed opportunity

Ssssttt... That'll be the Next Step..

Got to give all those mobile "repair-and-rescue" shops an opportunity to add to their repertoire..

BOFH: What a beautiful classic car. Shame if anything were to happen to it

Grikath

Re: No repercussions?

Not exactly forgiving... There's a constant Cold War between BOFH and PFY running in the background, it simply doesn't get featured as much as it used to in the past.

And there's a certain amount of pragmatism involved.. If the PFY doesn't try to Unseat the BOFH in a pro-active career move, he is obviously unfit for duty and needs to...go... But training up a new PFY is troublesome and actual...work... It's a precarious balance..

Alien life on Super-Earth can survive longer than us due to long-lasting protection from cosmic rays

Grikath
Boffin

Re: Just a non-biologist type question

Errrmmm... no? Cosmic rays are indeed charged particles, which, like the general ionised soup of the solar wind would be beholden to the vagaries of anything a magnetic field would do to them.

However... They are charged particles that have been accelerated to a speed just short of c by the processes that are supposed to spawn them. Which, as a certain mr. Einstein teaches us, means their virtual mass is quite impressive, and means they tend to be less than impressed by magnetic fields they encounter, unless that field is really strong. And they pass by really close.

Of course, if something slows them down even a tad, they shed a lot of that virtual mass really fast. But by that time we've stopped calling them cosmic rays, as they slip into a different energy band.

So yeah.. cosmic rays smash stuff.

And no.. Neutrinos are neutrinos.We shower in those 24/7 and they don't seem to do much.

And as far as mutagenic power goes.. The worst culprit, by far, is Oxydane. Followed by the fair amount of gamma and Röntgen radiation from our own star. Followed by spontaneous A-T and C-G conversions. Followed by.... Cosmic rays don't even make the top 10 when it comes to mutagenesis on a planet where life as we understand it would actually be possible.

Grikath

Re: Just a non-biologist type question

The biologist-type answer to that is that our universe is pretty much set up to make life happen, eventually, etc.

Young planets are basically huge chemical reactors, and produce a lot of the basic elements of what we currently assume are needed for life. If the right conditions are there: mostly liquid water, pressure and a bit of heat at the right range, all those basic elements follow the dance of chemistry and random chance and both RNA and proteins will form. Some of that will have their own chemical properties, and....

A lot of that sequence depends, etc. But the conditions needed for it aren't that extreme, and still exist around volcanic areas here until this day. And are used by us ( under controlled conditions, but the chemistry is the same..) for those PCR tests we're all bothered by currently.

And cosmic rays don't kickstart anything. They are so energetic they smash things to bits. To the point of shooting right into our planet and going right through it only slowing it down a bit on occasion. Our magnetosphere doesn't do much to protect us from that, really. What it does do is prevent our planet from being stripped bare and terminally irradiated by the solar wind.

Venus has an atmosphere because of its gravity well and the fact that the main atmospheric components are CO2 and sulphuric acid. Heavy stuff. Mars, being much smaller, didn't stand a chance, and while it may have had some microbial life in its historical oceans, those have been stripped while the planet was still relatively warm. Else it would still have plains of ice instead of just desert. Pluto does have plains of ice, but even that far out the solar wind strips away its atmosphere in "summer" when it actually has one. That's how important a geomagnetic field is: It keeps the water in.

Judging by the way your face lit up, my inbox just got more attractive

Grikath

Re: A sound idea?

"because it's a less inconvenient, less functional, and just generally incredibly stupid way of doing some of the same job."

Which is sort of the raison d'étre for mr. Dabbs' tales of wonder and mayhem...

Of which this particular episode has me in dubio whether to invoice him for a new keyboard, or to inquire where to acquire said prototype for...rigorous testing. Hmmm...maybe both...

Get real: Say what you like about your app but don't be surprised if I trollsplain

Grikath
Devil

Re: R-PUR

The facehugger thing has been done, in several incarnations. Friend of mine makes them in leather, together with the proper Pestilence Doctor masks. But there are plenty cheap options if you want to go for those looks.

Suffice to say that friend has a serious backlog when it comes to producing the things, even though they aren't cheap.

BOFH: You. Wouldn't. Put. A. Test. Machine. Into. Production. Without. Telling. Us.

Grikath

Re: "We've bought this setup and now you must make it work"

Not really...

"No problem.. What's the support ticket number?"

"Huh?!! What do you need that for?"

"Well... *Your* lot insisted all our hours should be tied to job tickets so they'd be billable internally against your budgets... So without a ticket number I can't verify my hours and all that.."

"Ummmmmmm... Can't you make an exception?"

"Sure, I'm allowed to do work outside hours as a contractor.. but... *sucking teeth* ... I'll send you an extimate for that tomorrow, ok?"

Grikath
Devil

Re: Testing 1 2 3

Is there a difference?

Google to auto-enroll 150m users, 2m YouTubers with two-factor authentication

Grikath
Facepalm

You mean carrying an actual, physical thing with you that can get lost, stolen, damaged....And which gives Access To All Your Stuffz..

Brillant Idea!! Stellar!!

UK.gov presents its National Space Strategy: Space is worth billions to us. Just don't mention Brexit, OK?

Grikath

Re: "putting rocket boosters the size of a Saturn V's F1"

You're expecting the PR and coloured pencil departments to get things right? Heh...

Including the fact that building those monsters now would be... a waste. Musk et.al. have dramatically improved the power/size ratio of rocket engines, so everybody + dog is going for the clustered, gimballed and very much throttleable/restartable/re-useable stacks.

After all, as much fun as it was to see the big fireballs of the experimental models, Musk did manage to first land his boosters, then his main stage, and finally a rather big contraption that may one day indeed become a fuly fledged spaceship. Using "small" engines. As do ESA, and all the various "upstarts" in Asia in their large fireworks.

F1's aren't needed anymore. They were meant to send the entire giant Apollo stack to the Moon in one go. Nowadays we can actually send the bits up individually for less and dock/assemble in orbit. Or, if you want to get fancy.... Starship is meant for Mars, but in my eyes makes for a mighty fine start of a Moon base with a couple of modifications...

SpaceX Starship struts its stack to show it has the right stuff

Grikath

So... the equivalent of 5 mins of LA daily gridlock? Even less time if you calculate the CO2 produced making all those semistationary wheeled tin cans and the roads they're on into account.

So yeah...

Grikath
Boffin

Re: "Mine is bigger than yours"

That would require the ISS to keep spinning, and a sloooooow automated approach by Starship....

Intrepid squid mission may help in kraken riddle of why zero-g makes astronauts sick

Grikath
Devil

Umami.... seriously...

Although as acronyms go this one is ..palatable..

BOFH: When the Sun rises in the West and sets in the East, only then will the UPS cease to supply uninterrupted voltage

Grikath

Re: Experience

To be fair.. They gave the young lad every possible bit of warning Not To Meddle without actually breaking out the CattleProd™ itself...

Clearly Darwin Award material, that lad...

You start wondering who else he had already ticked off to rate the .....suggestion... he should have a look at the efficiency of the IT department...

Whoop! Robot/human high-fives all round! Oh, my fingers have disintegrated

Grikath

I believe the aim was for 5.. Plus the double-entendre of "the smallest trumpet"..

Elon Musk's SpaceX bags $3bn NASA contract to, fingers crossed, land first woman on the Moon

Grikath
Devil

Re: To do list

Don't need to..It's all CGI nowadays..

The only question.. Will it be Alphabet or Amazon that will be in on that deal...

Sadly, the catastrophic impact with Apophis asteroid isn't going to happen in 2068

Grikath

Re: placing it even closer than some satellites in geosynchronous orbits

Urrrr.... you really don't want that to happen....

Asteroids like that ( by current estimates) aren't solid rock, but rather an aggregate clump. If it hits a satellite at the speed it is going the result will not be pretty. At all....

A direct impact by the asteroid would be significant, but not "world-ending" , despite the Doomsayers. But at least it'd hit in one spot. What would happen after a collision is anyone's guess, but the next pass of the remains would make for Interesting Times.

We've seen things you people wouldn't believe. A halo of light polarized by a gigantic black hole's magnetic field...

Grikath

Well.. The science says that a theoretical black hole of the mass P9 is supposed to have would evaporate ( or explode, depending on your taste ) within nano- , if not femtoseconds after creation. With an event horizon so small that single atoms seem large in comparison.

Not exactly a likely candidate.

Grikath

Re: Black hole in 'has quite mundane magnetic field' shock!

To be fair...

The field only has to accelerate the plasma up to ~c to avoid the event horizon in an orbital equilibrium. And the plasma can have quite a bit of a run-up to get there, especially in a spiral setup. It doesn't have to race around a tight corner like in the LHC or your typical fusion reactor as well, locally the field is "forward only".

So you can get quite a lot done with a "modest" field.

Boffins revisit the Antikythera Mechanism and assert it’s no longer Greek to them

Grikath
Pirate

Re: Must look at this

Well.. the monks that got plundered did write the commonly taught History, while at the same time a different branch tried to Convert the "damned heathens"...

On the other hand, the Danes/Russ/Swedes/northern Slavs(!) didn't go in for Writing Complaints Down much. If it wasn't worth being sung by a Skald, or entrusted to Runes, it wasn't worth mentioning..

So the primary sources we have just might be a tad biased, and not wholly represent the opinion of the Vikingr themselves.

Icon because..

Besides... Those complaining monks were officially Ascetics.. They didn't have any use for all that gold and posessions anyway. Hypocritical bastards..

Grikath

ummm...

You don't need a lathe to make the concentric shafts. There's several methods to do this, none requiring a lathe of any kind. Them greeks knew how to Bronze, y'know...

Oh, and the ancient egyptians already had lathes, notably the bow-type and the spring type for wood and stone work. So I think the greeks of the 1st c. BC may just have had a clue about them after a couple of centuries of trade and war and stuff.

Soft-shell robot uses snailfish features to sail though Mariana Trench stress test

Grikath
Pirate

The real test...

"What will try to eat it?"

Not entirely tongue-in-cheek, since brilliant as the design is, it also makes the thing look like Food... And meals are few and far between in the deep ocean..

Icon because..

Intel told by jury to pay $2.18bn to VLSI for ripping off two semiconductor patents

Grikath

Re: completely artificial construction

Dunno about the "artificial construction"...

VLSI is simply the "legal arm" of NXP, which is the chip-fabbing part of the Philips blob. It makes sense in a way to incorporate the patent-wrangling part, given that it's a specialism in and of itself nowadays, and there's a measure of flexibility needed there that you just can't get as part of the main corporate/production body.

Especially when you have to play legal ball in the US, which is ..shall we say.. quite typical when it comes to stakes involving the unholy mess of patents and payouts. Choosing Waco is part of that. It's not as if worthies as Apple and Intel and... don't shop for "friendly" court districts or anything..

This isn't some shady ambulance chaser with some stupidly-obvious US patents trying to wring some cash out of a victim. This is ultimately a slugfight between Philips and Chipzilla involving real patents used in real tech.

And it'll drag on a bit, I reckon.

Wells Fargo patent troll case has finance world all aquiver so Barclays, TD Bank sign up to Open Invention Network

Grikath

Re: Wonder how this will impact UK banks with no US presence?

Patents are national grants , so a US patent is not valid outside the US. The move is mainly against trolls in the US.

The UK/EU is also not really a place where patent trolls thrive, simply because the payouts on a possible win are much smaller and more based in reality ( starting with the simple issue of requiring someone to actively use the patent for something other than litigation in a lot of cases...) , and the UK/EU patent agencies are ( as yet ) a lot stricter in what they allow as a patent, so there's far less "frivolous"/obvious/insane patents that can be used as ammunition in a case compared to the situation that has evolved in the US.

Nominet faces showdown with British internet industry: Extraordinary vote called to oust CEO, board members

Grikath

Re: Too little, too late.

"Yes what is it about the people the likes of Nominet and Icann seem to attract?"

The New Court Nobility.

Manages vast stretches of Real Estate™, gets there through Connections, can rebuff any criticism or responsibility through the Network, makes sure to line pockets before the next protegé is up for his/her Due's.

Engineers blame 'intentionally conservative' test parameters for premature end to Space Launch System hotfire

Grikath

There once was this One Ring

And thus they spake: It Will Be All Right.....

What can the 1944 OSS manual teach us before we all return to sabotage the office?

Grikath

Re: passengers?

Nononono... You can't call them "customers" .. that implies they have actual rights and expectations...

The correct terms nowadays are "guests" who have a "travel experience".

What does my neighbour's Tesla have in common with a stairlift?

Grikath
Trollface

To be fair..

That video that is NOT at the end of the article features some decent and enthousiastic Air Guitar in it...

SpaceX Starship blows up on landing, Elon Musk says it's the data that matters and that landed just fine

Grikath

Re: SN8 flight was to test multiple concepts in one go

This...

Plus the fact that this prototype seemed to lack any serious attempt at, y'know, actual landing gear at all.

I've the feeling the craft wasn't expected to land without rapid disassembly, and that it got a lot further than people actually expected. The whole flight showed enough "you really don't want to see this happen" from the engine housing as it was..

Mysterious metal monolith found in 'very remote' part of Utah

Grikath

attempt at art

which fits the "too much time and money" category.

Weren't there some "pop-up" artists of the Banksy mindset that do this kind of stuff?

One does not simply shove elephants on a ballet shoe point and call it an acceptable measure of pressure

Grikath

Weird choice, really..

May be a local thing here in Holland, but the standard example for that particular aspect of physics has been the "Supermodel on Spike Heels" for yonks.

This may be because the weight/height ratio for your standard anorexic walking coat-rack and the floor area of spike heels have been pretty much well-defined and relatively stable over decades.

Plus that in any given highschool class there's always at least one female victim volunteer wearing the torture devices available for a practical demonstration.

Trump administration labels WeChat, TikTok ‘threats’ to national security, bans transactions with both

Grikath

It's more like... What in that sentence does not describe most of the internet nowadays?

Where's the ban on Facebook, Twitter, Youtube, etc. etc. etc........ ?

After all, they do exactly the same, if not worse....

We'll pay £400k for a depth charge-proof robot submarine, says UK's Ministry of Defence

Grikath

Re: Thats our whole navy ...................

Us cloggies will probably send one of our 7 Provinces frigs along. Besides the ability to play C&C for (part of) the escorts, they've got a long-range anti-ballistics suite which the UK hasn't got. ( besides the usual ASW/AA stuff all dutch frigs have.)

I'm willing to bet a beer or two that the US ship will be of a similar bent. It'd plug a major hole in the defense bubble, given that a lot of the local theoretical Baddies can lob Nasty Stuff over a couple 100 miles nowadays...

University ordered to stop running women-only job ads

Grikath

Well... It's the TUE.. The "ability" bit for any faculty position is a given.. They've got no "fluffy subjects" there.. It's engineering and/or applied physics all the way..

Which is the main problem with that 30% goal... There's simply not that many women making a career out of that level of hardcore science.. They're aiming at rougly 5-6 times the fraction of women actually available.. Even if they fish in the international pool, that's quite a tall order.

The Moon certainly ain't made of cheese but it may be made of more metal than previously thought, sensor shows

Grikath

Alternatively...

The Moon may have had overall less metal per olympic-sized swimming pool when she formed, but we also know quite a lot of that did never separate out into something that resembles the lovely little life-preserving dynamo the Earth has.

The Moon, especially the outer bit did cool down rather rapidly, so it's entirely possible that the concentration of metal in the crust is higher than here on Earth. Especially when you realise that the Moon must have received some core material from Theia, and possibly proto-Earth, depending on how big of a Bang that was..

Not so nice, we investigated them twice: EU opens double whammy of inquiries into Apple's biz practices

Grikath

Re: The worm in the picture doesn't seem right to me

Dunno... it fits the company... centipedes whoopss... millipedes.. are ravenous poisonous predators, so........

Grikath
Coffee/keyboard

Re: The Register has asked Apple, Spotify, and Rakuten for comment.

Yes... a most surprising and unexpected development there....

One wonders what must have happened to have a PR/Legal drone fly over Vulture Central territory in blatant disregard of the strict No-Fly Zone that is usual from the Masters of Fruit..... Maybe they know they're in deep doodoo with this one and are desperately scrambling for all the sympathy they can get?

Icon because...not quite...but close...

'One rule for me, another for them' is all well and good until it sinks the entire company's ability to receive emails

Grikath

2GB monster

I worked for a PC manufacturer in that era as tech support/repair shop , and having access to Stuff We Never Could Afford Ourselves we did load up a machine or two with ...shall we say... excessive specs..

So yes.. there's been at least one Win95 box with 2 GB because we did build one, to see if it would actually work, mostly.

From memory: Yes it worked, even though any performance improvement past 64MB was actually negligible, and it did have problems addressing the full memory space. It did work pretty well ( and lightning-fast for the time once you got stuff loaded) because we resorted to using the overkill past 128 MB as virtual hard disks. Which did work a treat.

We did get a serious bollocking over it, because welll... Using expensive server-grade hardware for Experiments tends to be Frowned Upon From Above... But hey... For Science!! ;-)

Don't panic: An asteroid larger than the Empire State Building is flying past Earth this weekend but we're just fine

Grikath

Re: future orbits?

At 16 to a minimum of 5 lunar orbits that gravitational tug is so small that any deviations in orbit would end up in the realm of geological timescale, not human generations.

At its size, a chance encounter with a decent-sized rock would add more random momentum than Earth + Moon could ever do in a couple 100k years.

Edited to add: A gravity assist requires losing mass. Unless that rock has a method of shedding mass as it's going into a gravity well, it's a zero-sum equation coming out.

Grikath

So...

Given that lunar orbit equates to one light-second ( give or take a couple of olympic swimming pools) ...

This approach will be at 13 light-seconds, closest approach within a reasonable timeframe will be 5 light-seconds, and the orbits don't even intersect. It just comes close...ish.. For a given value of "close".

Not a threat, but close enough to toss a probe or two at it to see what it's made of now that his Muskness seems to have this rocketry thing mostly sorted out.

Trump issues toothless exec order to show donors, fans he's doing something about those Twitter twerps

Grikath

Not so sure it will be ineffective...

IANAL, but,,,,,

The problem for the big social media platforms may not be that this executive order may or may not be effective in and of itself. Their big problem is that it weakens their protection on one of the more contested powers on their platforms: their ability to edit or even delete self-published material, even though anything published may well not be illegal/obscene/whatever at the location of publishing.

Trump is, by far, not the only one that has run into the rather...haphazard.. and uniquely US-centric morality of "staff editing" that takes place on social media platforms. He's simply one of the top-profile ones, who doesn't have to run the infamously opague and boobytrapped hurdles to figure out what in your post has offended the Powers that Be on your social platform of choice so that it doesn't get published, or even gets you an appointment with the Banhammer.

Between the litigious nature of US society, and the rather sizeable group of people who feel Offended by censorship actions on social media platforms, the indirect effect ( and possibly actual purpose) of this executive order is the threat to open the floodgates to a deluge of lawsuits which up until now were blocked by that lovely little special protection of those social media platforms. Death by Papercut....

Trump himself may be the self-evident embodyment of the "cockwomble", but even while he may not be the brightest bulb in the bunch, his handlers are not stupid. And the threat of a ton of lawsuits that cannot be directly attributed to the Presidents' Office is a lovely little crowbar.

And so subtle that most news outlets have missed this implication outright.

5G mast set aflame in leafy Liverpool district, half an hour's walk from Penny Lane

Grikath

Wasn't a proper Scouser...

Seriously... If one of them would have gotten off his/her arse to down a tower, it would have gone down, not just stayed slightly damaged..

And no self-respecting Scouser would contemplate risking to be seen in public on an electric bicycle... It's just... Nope...

Not going Huawei just yet: UK ministers reportedly rethinking pledge to kick Chinese firm out of telco networks by 2023

Grikath

Scepticism...

This thing has doing the rounds for a bit now, but the whole Huawei Spai Thing™ is getting rather silly...

Especially since any system Huawei may be able to incorporate in their gear to Spy On US runs into the same problem the also much-discussed Three-Letter wishlist item of a government-mandated backdoor into mobile devices in the Land of the Free... It simply doesn't work in the end.

Whether Huawei would use a hardware, firmware, or software approach to accomplish a Phone Home service other than proper diagnostics, it would be found and probably cracked within months if not weeks. It'd simply be a matter of who, not when. Whether "Intelligence", White/Black/Grey Hats, (commercial) vulnerability research, or plain oldfashioned tech-savvy criminal organisations, there's too much glory and $$ to be had from cracking that system if it were actually there. Everybody + Dog that is remotely capable would be all over it.

Yet we still have to see a single shred of credible evidence. And I doubt that Vulture Central would miss the chance to blow up the front page in extra bold capitals if there was, and they could nail an exclusive.

And as yet.... nothing.

Meet ScrAPIr, MIT's Swiss army-knife for non-coders to shake data out of APIs (It's useful for pro devs, too)

Grikath
Angel

Re: our tech team is busy enough as it is

No doubt quickly edited in while IT was checking for "interference in the WiFi Matrix" while helpfully checking the window hinges for Anomalies. Just a friendly service by your local techie...

If American tech is used to design or make that chip, you better not ship it to Huawei, warns Uncle Sam

Grikath

I can see this going well....

"Essentially, chips manufactured overseas using US software or hardware cannot be shipped to Huawei or any of its subsidiaries without Uncle Sam's permission. That means that even if the semiconductors were commissioned or designed by Huawei and manufactured by foundries outside of the States, the chips will still be subject to export limits if the manufacturing processes use any US equipment or design tools. "

Between the mess that is the USPTO when it comes to patents and its relation (ahem) to other patenting agencies elsewhere in the world, corporate cross-licensing, and corporate presence demands, what exactly is "US software or hardware" ? Or is "the US" trying to Claim it All if there's even a shred of "US technology" in a production/supply line? That'll go down well...

And with the way this is stated, well after the fact as well.. This would apply to machines/production lines that may well have been built/ordered years ago...

I can see this one turning to Interesting Times if they're really going to put their foot down on this. And not for Huawei or ZTE.

What do you call megabucks Microsoft? No really, it's not a joke. El Reg needs you

Grikath

Redmond Ribbon.

With the possible pictorial of a noose topped by a bow-tie..

Wake up, Neo: Microsoft mulls using your brain waves or body heat to mine crypto-currency while viewing ads

Grikath

Re: Creepiness factor

In a sense, the technology is already here...

Any of the methods of measurement mentioned in the article , including the brainwaves, are established, if sometimes experimental, technology and have been demonstrated to work. Quite a lot of them actually are used in practical applications and research aimed at the Betterment of Mankind ( and as always, military applications..) . The aim there is usually control/interface, but something has to be measured to be used as an input...

Allowing for maturing of currently experimental/developing control tech, which we will see if this whole AR/VR thing really does become practical one day, and before that in gaming consoles ( of which quite a bit is there already..) it's simply like tracking the mouse cursor and registering clicks. The same kind of data.. Has a very legitimate purpose for the system, can very much be abused...

Which is why I wondered why they'd bother to patent this at all.. Until I realised we're dealing with the USPTO here.. The one allowing for Rounded Corners, and the addition of "on a mobile device" to well-established tech, and....

Fright at the museum: Bored curators play spooky Top Trumps on Twitter over who has the creepiest object

Grikath

Re: A few years ago in Cornwall

Meh... I know Radboud University in Nijmegen still has its old Pathological collection.

If the Anatomical Museum, showing off what the finest of surgical hands can produce in displays of the human anotomy how it should look, the Pathological Museum has all the Stuff That Went Wrong.... And the usual 18th/early 19thC Curiosa to boot.

You do have to book in advance though, it's only open on appointment.. And... not everyone manages the full exhibit... 3:-)

So how do the coronavirus smartphone tracking apps actually work and should you download one to help?

Grikath
Boffin

Bluetooth (alone) won't work.

The granularity of the system is several times larger than the actual direct infection radius of anyone actually infected. Even with bad reception you're talking 5 meter radius, running up to 10 meters. That's a lot of of area where people can be in, and be in the "watchlist". Especially over two weeks, the supposed incubation period of Covid/SARS2

This means that the "alert bubble" is orders of magnitude wider than it needs to be. This also means that the spread of the alert/virtual infection in this system is several orders of magnitudes faster than the Real Thing™. In short, within a week or two everyone using this app will have been "infected". No difference from a total lockdown. This is "basic" math used in modelling, including epidemiology.

So unless a Bluetooth solution also includes mitigation or selection it's practically useless. It must at least consider frequency of contact and proximity to avoid you being "tagged" because of a one-off "contact" two weeks ago. And a lot of other things to give at least a decent approximate of the chance you have indeed been in infectuous contact with someone who has developed Covid/SARS2.

Else it's just a panic-spreader. Well before any issues over privacy, slippery slopes, and a very ..insidious.. introduction of mass surveillance in our "free" society.

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