The first "anti-stab" knife is set to hit store shelves in the U.K., designed to work as normal in the kitchen but ineffective as a weapon.
The knife has a rounded edge instead of a point and will snag on clothing and skin to make it more difficult to stab someone.
It was invented by industrial designer John Cornock, who was inspired by a documentary in which doctors advocated banning traditional knives.
Cornock, 42, from Swindon. England, said that the knife will cut vegetables, but will make it almost impossible to stab someone to death and will reduce the risk of accidental injuries.
"It can never be a totally safe knife, but the idea is you can’t inflict a fatal wound," he said. "Nobody could just grab one out of the kitchen drawer and kill someone."