All it takes is the right thumb.

Thor's mighty hammer Mjolnir can only be lifted by Thor, maybe Odin as well. In fact one line from an Avengers movie has Tony Stark stating that a translation basically says you need to have Thor's fingerprints in order to be worthy of lifting it, which is shown at the beginning of the video.

This is a pretty cool device. A dude made Thor's hammer using all sorts of science-y stuff like electromagnets, batteries and fingerprint recognition. The end result is a hammer that you can't lift off a metal surface, unless you have this guys thumb to turn off power to the magnets.

Well, there is another way around it, and someone does figure it out by the end of the video, but my guess is Odin you consider it cheating and smite you on the spot.