"Max Demian" wrote in message
...
On 28/04/2021 23:28, Andy Burns wrote:
Max Demian wrote:

It's because the developer had the latest phone/software.

The NHS covid app requires bluetooth "low energy" (BLE) capability
introduced in android 6 (marshmallow) but not all phones had the hardware
for it.

Since Bluetooth wasn't designed to determine separation between phones I
doubt it would be much good for the purpose of tracing.

In fact that does work well enough to be useful.

And the signal goes through solid objects that viruses can't

Yes, but thats not often a problem and falses positive, not negative.