Traditional handcuff keys are short and often difficult to use. Extended keys are hard to carry. Their double lock pin and pawl release can catch on equipment and snag on clothing. A folding key solves these problems but requires time to open. The AutoKey addresses all of these issues. In it's open position, there are no protruding pins or projecting openers. Hung on a keyring or carried in the pocket, the design is ergonomic and smooth. A simple push button releases a back set, heat treated, stainless steel handcuff key.