Fingerprint Authentication
Fingerprints are, as we all know, unique to each person. Even identical twins will typically have different fingerprints, usually mirror images. As a result, they can be used for all sorts of authentication purposes. Fingerprint authentication, as we all know, can match individuals to particular crime scenes. Fingerprint Authentication can also be used to authenticate employee presence on the worksites ala punch cards in the old days, except with this method, no one else will be able to punch in or out for an employee but themselves. They can also be used to monitor which employees have entered stockrooms in retail settings, reducing cases of pilferage.