Make a Comment • Email Link • Send Letter to Editor IPFS News Link • Techno Gadgets Scientists Create Molecule-Size Keypad Lock 12-27-2006 • LiveScience.com Scientists have created a keypad lock a single molecule in size. This lock only activates when exposed to the correct password, a sequence of chemicals and light. Watch Streaming Broadcast Live: LRN.fm Watch live shows and archives TV Live Chat Telegram Share this page with your friends on your favorite social network: