|The Cobra Tag($60) will keep you from losing your phone and keys(it is attached to your keys, purse, computer bag, or any other item you want to protect from loss.)
"The Cobra Tag is also a 2 way finder. Tap the button on the Cobra Tag tag to ring your Smartphone. If you are looking for your Cobra Tag protected item, use the phone’s application to make the Cobra Tag ring. To secure your phones data, the application can be set to lock your phone when out of range of your tagged item." And can also check in with the fob's GPS coordinates to hone in on where it is, and continue to trigger the noise until you find 'em.