employee time clock and also magnetic card use the same method. Advantages: photoelectric read bar code card number, low malfunction rate. Faults: card effortlessly forged (special mask lengths of barcode except), bar code dirty after reduced level of sensitivity and a wrong size pointed out. 5. Induction card roll appliance advantages: non-contact card read, card, no wear, no incorrect size indicated. Faults: greeting card cost on the high aspect, can not solve the "generation involving punch" problem. 6. Fingerprint work machine advantages: no need to minute card, solve problems and strike. Faults: requirements personnel good quality is good, fingerprint for cleaning, against the destruction of ability and stability need to further help the (currently at the beginning stage). Seven. Eye rainbow roll appliance ideal roll machine. Benefit: make use of the eyes of the one feature to identify different people, to do with the particular non-contact method to identify the characteristics, identification speed is less than 1 second.

the time and attendance systems Disadvantages: the cost can be high, has not yet to penetrate the Chinese market. 8. Just about all roll machine should be the essential quality time accurate, attendance information not easily disturbed dropped or chaos (occasional unavoidably), connection with the computer stability. Subsequent, the attendance software apparently everybody can write check on perform attendance software, if it is right for you to see your request. Easy to use biometric time clock, stable and practical.6. biometric time clock Advantages: no need to credit card, solve problems and boxing techinque. Faults: requirements personnel good quality is good, fingerprint for cleaning, against the destruction of ability and also stability need to further increase the (currently at the beginning stage). 6. Eye rainbow roll equipment The ideal roll machine. pistol safe time clock Advantage: make use of the sight of the one feature to identify folks, to do with the non-contact method to identify the characteristics, identification speed will be less than 1 second. Down sides: the cost is high, hasn't yet to enter the Chinese marketplace. 8. All roll machine should be the necessary quality Time exact, attendance data not easily disturbed lost or mayhem (occasional unavoidably), communication with the laptop or computer stability.



Recognition will be the field acquisition to pistol safe with fingerprint data library of fingerprint by contrast, uncover and the biometric time clock. This can be called "one to many matching (one particular - to - many matching)In .. Validation is actually to answer this kind of question: "who is he?In . Identification mainly used in criminal offense fingerprint matching in the field of conventional. An unidentified person's finger prints and fingerprint storehouse get criminal record people compare finger prints, to determine whether he had criminal records.

fingerprint time clock operation, lengthy service life, easy to breakdown, general use time more than 1 years later, you'll need regular maintenance and servicing complex, and often is in the chipped in the process of the damage, taking care time is long, frequently affected normal attendance as well as fingerprint time clock integrity, along with clock speed slow, regarding 2-3 seconds a person, and people usually play card after this individual see if cracked correct and clear, virtually the postpone time, formed when quitting time clock zone flow obstruction, unless increase the number of time clock card, so that improve the management cost, and card is also a nonnegligible consumables investment. Another generation involving punch phenomenon is critical, the traditional attendance statistics perform of high quality, and because the clock cloudy or quantity too much, easy to generate statistics deviation, and thus easy to cause the dispute, impacts the work efficiency and get.
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