The securimax can opener works really well. :)
The thick rim of a can is sliced by the securimax can opener, leaving a very very weak connection to the can, this just comes off easily else you then use a gripper on the side of the opener to lift it.
You are left with a part rim around the top of the can and a lid with part rim still on it held by the opener.
Securimax can opener is made in China.