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From the Intelligun website:

Intelligun^® is a fingerprint locking system which completely locks your gun, unlocking it immediately only for you and for your authorized users.

No change to your gun’s basic shape, weight, look or feel.
No actions needed to unlock — just hold your gun normally.
Relocks right when you let go of your gun.
Manual keyed override, allowing you to disable the Intelligun layer of safety with a key.
Available for order now on a model 1911 handgun.
Retrofit kit and additional handgun models coming soon!

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