My requirements for such a system:
1. No batteries required, no electricity what-so-ever, able to function after an EMP pulse.
2. Be able to accomodate an unlimited number of users, and learn a new user within 5 seconds without a special tool or device (including a computer), once learned, the user must always be remembered
3. Go from safe to shoot in under 0.5 seconds
4. Be usable with heavy or latex gloves; burned, bloodied or wet hands; with missing or disabled digits; one-handed; and by either the left or right hand.
5. Require no physical token be implanted in or worn or carried by the user, no rings, no bracelet, no necklace, etc.
6. Add no weight to the firearm.
7. Be useable by any individual, from an 8yo girl to a 25yo male, to a 75yo grandmother with arthritus.
8. Must be functional from -40F to 120F, in snow, ice, sand and water.
9. Must be installed on all weapons used by the FBI Hostage Rescue Team, my local SWAT team and the SRT force at my Post.
Once all 9 conditions can be met, then I'll consider purchasing one.
