The Biometric Twenty-Module Unit includes twenty Underwood watch winders kept safe by the exclusive biometric lock system. The Underwood fingerprint scanning system is basically a stand-alone system which by scanning and recognizing the fingerprint sends a command signal to activate and open the electromagnetic lock system in the case. The system is simple to use. In the beginning the owner only needs to register their fingerprints following a predetermined set of instructions. Afterwards to open the case all that is required is to place the index finger on the scanner and following verification the command signal to open will be issued. One of the main advantages of the system is the fact that the only way to access the case is by way of the scanner, there is no other way anybody can access the actual locks or command system from the outside, as all of these elements are inside the case. Regarding the matter of privacy and security there may be a fear or concern that the registration of a fingerprint might be a problem, in that someone could possibly access the system and steal the image of the fingerprint, stealing their identity so to speak and possibly using this for illegal purposes. Nothing could be further from the truth because with this system the fingerprint is not stored as an actual image but is coded and transferred into a mathematical algorithm, whereby only certain points of the fingerprint are registered. These points such as whorls, loops, bifurcations and crests etc. are the characteristic points used to determine any fingerprint. It is impossible to reconstruct the image of a fingerprint from this coded information. Dimensions ca. W85,5XH 72XD28,5 cm