文档介绍：Entrance guard system overall concept
" The person card unites " Design mentality
The biological recognition technology is one kind according to humanity's physiological characteristic (fingerprint, sound, the face, iris and so on) carries on individual status authentication to debate knows the technology. In recent years, along with information industries1 development, the biological recognition technology in domestic and foreign obtained more and more extensive research and the application. And the fingerprint automatic diagnosis technology develops the maturest one biological recognition technology now, the fingerprint takes the human body biology recognition one way, it has the following several remarkable merits: (1) determinism: Each fingerprint in person six month-long time forms, lifelong will not change later, even if is scratched, the burn, so long as will not injury and the dermis, will not change his fingerprint shape. (2) uniqueness: Two completely same fingerprints appear the probability is small, does not surpass 1/60000000000. (3) sample is simple: Only needs an electric capacity or optics fingerprint gathering may gather the fingerprint image. The stored datum are few: In the fingerprint recognition uses the template is only the characteristic byte which withdraws from the fingerprint picture, but is not the view picture fingerprint picture, the characteristic byte's size is 300〜400B, the reserves is relatively small.
On the other hand, compares the IC card with the magcard to take individual fingerprint the carrier also to have the following several merits: the (1) IC card service life is long, generally may repeatedly above the read-write 100,000 times. (2) Card storage capacity is big, has the enough spatial depositing fingerprint image characteristic data. (3) encryption memory stick has the logical encryption function, the card the password protection, may prevent the illegal duplication.
After entrance guard system card holder fingerprint