Re: And the non-centralised approach
> if my phone detects that I walked passed a railway line and somebody on the train flagged as positive
No it won't. You need to have received two successive beacon tokens from the other person's phone for you to be considered to have been in contact. The suggestion is that they will be generated at whatever the current "close contact" time is, around 15 mins.
Biting the hand that feeds IT
