Zomm hopes to slash the number of smartphones lost each year with the launch of what it describes as the world's first wireless leash for mobile phones.
On show at CES, the gadget, which is about the size of a poker chip, is designed to be attached to a keyring and maintains communication with a mobile phone via Bluetooth. Once the mobile phone owner walks away from the handset and out of Bluetooth range - up to 30ft - Zomm sounds an alarm, notifying them that they've left their phone behind.
While highly annoying in some environments, the device could be a life-saver for those who regularly lose their handset on nights out, Zomm claims.
"Mobile phones are packed full of personal information and confidential business communication, so losing one is a nightmare for most people," said Henry Penix, co-founder of Zomm.
As well as attempting to prevent mobile phone loss, Zomm acts as a remote speakerphone and a personal security device.
The speakerphone functionality allows users to answer incoming calls and speak to the caller when their phone is out of site, provided the two devices are in touch via Bluetooth.
As a personal security device, Zomm will sound a panic alarm and/or call for emergency assistance from anywhere in the world with just one press of a button.
Zomm is expected to be ready for release in the summer of 2010, and will sell for £79.95 (£50) in the US.