That’s perfect for finding out where someone lives. Drop it in their bag or jacket at a concert/bar/work/whatever-in-the-evening, and the place they’re likely at in 4 hours is their home.
Not trying to be creepy, I’m just trying to demonstrate how we all need to think like adversaries (eg creeps) when designing products.
You can probably find out where they live from knowing their name. This application is not a high level of stalking.
> not a high level of stalking
imo no level of stalking is appropriate. while this device might not do everything a stalker wants it to, it surely makes it easier for them