biometric time clock Has been the emergence of many biological recognition technology
biometric time clock Has been the emergence of many biological recognition technology, such as fingerprint identification, palms geometry identification, iris recognition, retinal recognition, face recognition, signature recognition, voice recognition, etc., but some of the high technical content of biological recognition method is still in the experimental stage. We believe that with the rapid progress of science and technology, there will be more and more biological recognition technology is applied to real life.
There are different ways to realize biometric time clock. Some of them are imitating traditional public security department used method, comparative fingerprint local details; Some directly through all the features for identification; And some use more unique methods, such as fingerprint corrugated edge mode and ultrasonic. Some equipment can real-time measurement finger fingerprint, and others can't. In all biological recognition technology, fingerprint recognition is the most widely used a. Fingerprint identification for indoor security system is more suitable for, because can have a sufficient condition for the user to provide explanations and training, and system running environment is controlled. Because of its relative low price, smaller volume (can be easily integrated into the keyboard) and easy integration, so in the workstation security access system application of almost all fingerprint identification.
2. fingerprint time clock palm geometry identification is measured by the user's palms and fingers of the physical characteristics for identification, advanced products can also identify 3 d image. As a kind of established method, palm geometry recognition not only performance is good, and use more convenient. It applicable occasion is the number of users is more, or user although not often use, but when using is easy to accept. If need be, this technology can be a very high accuracy, and at the same time can be flexibly adjusted biological recognition technology performance to fairly extensive use requirement. Hand shape reader use range is very wide, and easily integrated into other systems, so become many biological recognition technology in the project first choice.
3. Voice and fingerprint time clock is through the analysis of the voice of the users of the physical characteristics for identification technology. At present, although there have been some voice recognition products to enter the market, but use up is not so convenient, this is mainly because sensor and the voice of the people are of great variability. In addition, compared with other biological recognition technology, it USES step also is more complex, in some occasions is not convenient. A lot of research work is in progress, we believe that voice recognition technology has made great progress.
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