On my way back from Mexico, My luggage was searched by customs. They didn't take anything but when I got home?

Nsa are watching you a special bracelet that lets them trace and track every move you make, carefully pick up the bracelet wrap in tin foil ( this is so the GPS cant trace you ) but be careful as some of them can explode like on Mission Impossible YOU DUMB F U C K

Probably used it to track your journey from the airport home.

It is a GPS unit that was not properly concealed. They are tracking you.

Put it on your ankle that way they can definitely know your whereabouts

Have you got a dog ? let the dog wear it

you need to put a pic up ..we cannot guess