There was a time when biometric technology all seemed too far out there, like something out of a science fiction novel. These days, biometric scanners for all sorts of biometric data are readily available to whoever thinks they are worth the cost. A  Biometric Fingerprint Scanner  could be used for a very wide variety of interesting functions. They have of course, long been used for locks and for securing all sorts of important areas. However, since they can be used to verify identity, they can be used to sign documents and even facilitate online transactions with a high level of security. They may even be used for elections to ensure voter security.