If someone lost key or something small that can be lost now can find it easily using Cobra tag and Phone Halo app together.

According to Gadget Lab, the tag can be attached to keys, a bag, or pretty much anything that is easy to lose or to forget. Then it talks to Android phone via Bluetooth and from there can do one of several things.

When the tag goes out of range Phone Halo app sounds an alarm. If this sounds annoying, then the app can also grab users location when the tag’s signal blinks out, so when user realize losing something he/she will fastly know where they left it.

Finally, both the tag and the phone can be used to find each other if in range. Pressing the button on one and the other will bleep.

The Cobra Tag costs $60 and the app is free. The maker of the Phone Halo app also sells an uglier tag for $30.