ABCNEWS.com : Cell Phone Guns Discovered

"At first sight it looks like a regular cell phone — same size, same shape, same overall appearance. But beneath the digital face lies a .22-caliber pistol — a phone gun capable of firing four rounds in quick succession with a touch of the otherwise standard keypad.
European law enforcement officials — stunned by the discovery of these deadly decoys — say phone guns are changing the rules of engagement in Europe.
“We find it very, very alarming,” says Wolfgang Dicke of the German Police union. “It means police will have to draw their weapons whenever a person being checked reaches for their mobile phone.”