Fingerprint lock is to add fingerprint unlocking function to the original mechanical lock technology. The main technology of fingerprint unlocking is to store the user's fingerprint information first. When the user verifies with fingerprint, the fingerprint identification system will compare the user's fingerprint with the stored fingerprint. If the verified fingerprint matches the pre stored fingerprint, the door lock will open. If it does not match, an error will be prompted, and the door lock cannot be opened.
Fingerprint lock recognizes the owner and unlocks the lock by whether the fingerprint matches, so identifying the authenticity of the fingerprint has become an important technical indicator of the
fingerprint lock. At present, there are two types of probes widely used in the market to identify fingerprints, one is optical fingerprint head, the other is semiconductor fingerprint head.
Optical fingerprint head, which uses optical scanning, identifies fingerprints through information obtained by light reflection, and identifies fingerprint shape and structure to obtain fingerprint information; If an outlaw wants to forge the owner's fingerprint to open the door, he must obtain the owner's fingerprint and have high-precision modeling equipment. As the owner of the house, do you worry that your fingerprints will be stolen by criminals if you leave them in tea cups, leather bags and handbags? You don't need to worry, because even if you leave your fingerprints in tea cups, leather bags and handbags, you must use very sophisticated instruments to read them. Only public security departments have such high-precision instruments.
The semiconductor fingerprint head uses a capacitance reading system to form fingerprint information by using the capacitance changes between the grooves, ridges (including epidermis and dermis) and the reading surfaces of the fingerprint; If criminals want to forge the owner's fingerprint to open the door, they not only need to obtain the owner's fingerprint, but also forge biological objects, which is more difficult than the optical fingerprint head.
Both types of fingerprint heads can correctly identify the owner's fingerprint, and both have a high security level. The difference is that the former type is cheaper, while the latter type is much more expensive. Ordinary families and businesses can use the former type, while the latter type can be used in important departments such as banks and vaults. But at present, more and more fingerprint lock manufacturers are also using semiconductor fingerprint heads.
Fingerprint lock is upgraded from mechanical lock. Its main purpose is to improve the convenience of our life under the condition of ensuring the safety of property. Compared with mechanical lock,
fingerprint lock is a level higher. It is hundreds of times more difficult for criminals to forge false fingerprints of their owners than to pry locks.
