The Best BioLock I've Used

Another recommendation - this time for a bio-lock: The Keyless Biometric Fingerprint Door Lock Trinity 788. I own three of these, and have had several people ask me about them recently. Actually, the first one I owned was branded by Barska, but they're all exactly the same unit/model. I was delighted when I found this one by Adel. These work great, and can store up to 98 fingerprints - 3 of which are Admin fingerprints. These are for indoor installations only (or at least under cover / well out of outside weather). Some of the "key" features I liked about this unit are all the levels of back-up/redundancy it has:
#1 It has a non-volatile memory, that does not need to stay powered to remember settings and fingerprints (it doesn't store your actual fingerprint, rather a cryptographic hash of it).
#2 Should you not have your fingerprint handy (say, you're talking to someone over the phone, that you want to have access, and you're not on-site) there is a 6-digit passcode function too (stored as fingerprint #99).
#3 Should the batteries go dead, you can hold a 9-volt battery up to the bottom of the unit, to power it via built-in 'hidden' contacts.
#4 Should the electronics go bad - EMP? ;-) - you can remove the handle (with included allen-wrench) to expose a 100% mechanical keyed lock (2 keys also included).

Click on the image below see them on Amazon.com:

UPDATE:

Or this one: