"infamous but effective code"
"infamous but effective code"
Is it though? I've never bought into how effective it could be. It's determined on bluetooth signal strength and duration, which is more variable than just proximity. The signal strength presumably looks the same if my (and the other person's) phone is in their hands 20 feet away, compared with the phones in a padded jacket pocket while standing 3 feet apart.
Equally, doesn't take into account the environment (indoors, outdoors, how ventilated the space was), or any preventative methods in place (perspex screens, masks).