In the direction of a gun that can only be used by its owner or by those the owner authorizes:
No keys, watches, or codes are needed. All you do is pick up and hold your gun normally, and Intelligun® reads your fingerprint, authorizes you, and unlocks your gun right away, allowing only you to use your gun. Right when you let go of your gun, Intelligun®relocks your gun, rendering it completely inoperable.
Seems sensible. If it works.
If it’s crap then nobody will buy it and that will be that. On the other hand, if it turns out to be a good reliable weapon that can’t be used by bad guys, then the market will (aside from some giant gun comglomerate doing something shady to destroy it) probably help make such weapons proliferate over the older versions. Seems like a good idea to me. Let’s head further in this direction.
Readers, what are the drawbacks?
Leave them in the comments.
Here's a video that explains the concept: