Good idea. But...

1. It relies on the GPS location built into the phone. On mine at least the accuracy when used inside a building is bad. It was off by six blocks.

2. If you set it to send an email when you open the app, it has a little busy animation which it going to tell all but the dumbest that something is happening. Doesnt that sort of give away the secret notification?

3. If you set it to phone upon opening the app, it opens the regular calling function and displays that screen. Not exactly a stealth feature.

David in CA about Find My Phone