[Da Coyote]

Questions to ask:
1) Does it involve technology/mathmatics/science?
2) Do liberals approve of it?

If yes to both, run like hell. Liberals and technology do not mix. Think about it...English or eduction degrees and global warming. Political science degrees and economics. QED.

[Tallguy]

The credit card machines look at how shoppers sign their name — how hard they press the pen and the tempo of their signature — and not actual signatures. The "smart gun'' uses sensors to measure how a person pulls the trigger.

The gun has one-tenth of a second to decide. In that blink of an eye, the circuitry must receive millions of pieces of data from 16 pressure sensors in the weapon's grip, compare them to stored images of how authorized users of the weapon squeeze the trigger and decide if the two match.

What's the worst that can happen if a credit card machine rejects a legitimate signature? OK, now what's the worst thing that can happen when you pull your smartgun in a defensive situation? This is why 99% reliability isn't good enough.