The systems, for control of attendance and schedules, have been present by more of a century and have played a role important, in the pursuit of the employees of any business. With the fast proliferation of the devices of the digital era, of the Nineties, these mechanisms were improved in several aspects. This way, they were left back the card clocks, that were perforated and it went to the use of passwords and smart cards. Also it was ended the use of attendance lists. Unfortunately, still with the new designs it was not possible to solve two great problems, that continued martyring many organizations. On the one hand it was the inadequate security, in the work site and on the other, the lack of honesty whereupon some employees made use of the attendance controls.

The developments of the biometric technology, for the industry of the handling and control of attendance, put attention to these factors. In addition, also they focused in the design of solutions that could to work of independent way, without the necessity of constant supervision. The first designs of innovating biometric clocks had form, but they had several problems, reason why it was not worth the pain to implement them and the companies continued using classic methods. As answer to this designs were created, with terminals for the analysis of the complete hand, which produced the results that many wished. Besides their precision, these systems are easy to operate and their memories can file a great amount of information. Also, a system of these does not require of constant monitoring and causes that the processes, of liquidation of devengados wages, are much more simple. In order to use these apparatuses, the workers only must digitar a simple password, to place their hand in a reading plate and the system verifies and registers the taken information, of automatic way.

As it is possible to be perceived, the passwords continue being used, only that in company of a method of infallible identification. The hand of each person is different and is for that reason that it serves like identification method. With this system the possibility that is eliminated the employees commit frauds and causes that these increase their levels of productivity. Consequently, many companies have begun to use biometric clocks, to obtain better dividends and for, of step, to increase the levels of security. With these devices also it is possible to constitute better systems, for the access control.

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