This pin shows different ways that you can protect your phone from non-safe computers, public WIFI, and hackers in general. I learned a lot from reading about this and i would recommend someone else to read up about it too.
Attach this to anything and it becomes trackable by your iPhone. Never lose your keys or your dog ever again. I don't know what's stopping a thief from just pulling the device off of said unit and tossing it in a well