dooderooni
Well-known member
The Google/Apple API generates a random ID every 10 to 20 minutes so in the course of a day you'd have numerous ID's. If I passed you then my ID at that moment would be logged against your ID at that time and timestamped. If either of us then reported symptoms then an alert would be sent out and your phone would check its local database to see if the ID matched with that timestamp, if it did then it would warn you.
It's a bit more complicated than that, but all your data is stored on your device and all processing is done locally.
With the NHS app there is the possibility that it's not just that interaction with an infectious person that can be analysed, but your entire history of interactions both before and after that one that may have been a chance of infection. That's why digital rights experts are pushing for more transparency and legislation over data misuse and probably why the app might ultimately get pulled.
In theory, the medical research data could be invaluable, but there would always be the possibility that data harvesting would go beyond that purpose.
It's a bit more complicated than that, but all your data is stored on your device and all processing is done locally.
With the NHS app there is the possibility that it's not just that interaction with an infectious person that can be analysed, but your entire history of interactions both before and after that one that may have been a chance of infection. That's why digital rights experts are pushing for more transparency and legislation over data misuse and probably why the app might ultimately get pulled.
In theory, the medical research data could be invaluable, but there would always be the possibility that data harvesting would go beyond that purpose.