Re: Door hardware with electric strike

[Lewis Gardner <lgardner@xxxxxxxxxxxxxxxxxxxxxxxxxx>]

Robert L Bass wrote:

> If you want an automated solution that is truly difficult to
> compromise, deploy a system which requires "something you have plus
> something you know".  For example, you could install a lock which
> requires both a code and a finger print.

Not to be picky but...

There are three levels of authentication. Each is considered more secure
than the preceding.

1. Something you know. Passwords are easily shared and once more than
one person know them it is difficult to have any confidence in
authentication when presented.

2 Something you have. Keys, cards and other physical objects can be
copied but sharing is more difficult than a password. A physical object
can become a 1 if it is not kept secure, like leaving a key under the
door mat.

3 Something you are. Biometric authentication like fingerprint, hand and
retina scanners are considered the most secure since the item presented
for authentication cannot be copied or borrowed.

A code and a fingerprint are 1 and 3.