Dang, I haven't thought of this in years.  Back in the early 60's down in Azusa Ca. I was riding home on a dark and deserted road around 10 at night and passed a bike parked off to the side.  Flipped a U, and stopped to see if I could help.  . The rider was on his knees groping around on the ground. No flashlight.  He explained that he'd been pulled over by a cop and given a ticket, and after the cop took off he couldn't find his key.  Figured he'd dropped on the ground somewhere.  It was a UK bike, and back then they didn't have cut keys like they do now.  Just one of those stamped out El Cheapo one key fits all things.  So being a UK rider myself I whipped out my trusty universal screw driver and turned the ignition on, the bike fired and he was one happy camper....  Told him to pass it on...