Media playback is unsupported on your device

Will 'smart gun' technology make firearms safer?

23 May 2014 Last updated at 00:48 BST

A handgun that can only be fired if its owner is wearing a special watch has been developed by a German company.

The gun communicates with the owner's wristwatch through a RFID (radio-frequency identification) chip. If the two devices are more than 40cm (16in) apart the gun will not fire.

It is hoped that the device will make firearms safer, but in the United States, one of the largest markets for guns in the world, "smart gun" technology is proving controversial.

BBC Click TV's Marc Cieslak finds out more.

Watch more clips on the Click website. If you are in the UK you can watch the whole programme on BBC iPlayer.

Copyright © 2015 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.