

The tags don’t have GPS. They are basically a Bluetooth beacon. If a compatible phone is within range, it notes it’s existence and reports back to a central server.
Basically, if you took one out into the middle of nowhere, without a phone nearby it would be completely useless. They are only useful when in a crowded place.






This would definitely be mine too. Particularly if it was still jailbroken, as in the book.
In story, it could even cope with a lot of future sight powers. It was only the apex level ones that were on an even field with it.
The only downside is the erosion of your free will. It’s hard to make your own choices when this power is available to make them all for you.