Alex and Josh's "Sonic News Unlocker" reveals confidential information behind the headlines. It can be disguised as a pebble if muggers try to take it.
"As more devices are connected all the time, knowing the truth and maintaining personal privacy will be key issues," says Jonathan.
"Rendering gadgets useless or hidden from thieves will also be important, but changing it into another material may be a little further off. It's refreshing they're also seek to validate the truth.