Science and technology small Popular science-fingerprint recognition work principle, unique fingerprint lock safe?

Pattern unlock, unlock the password, face unlock, in a number of personal security unlock mode, the safety factor of higher fingerprint unlock also appeared. So you know how he works ...

Fingerprint, because of its lifelong invariance, uniqueness and convenience, has almost become synonymous with biometric recognition. A fingerprint is a line of wrinkles on the face of a person's finger at the end of the skin. The pattern is arranged in a regular pattern and forms different patterns. The starting point, end point, binding point and bifurcation point of the line, called the minutiae of the fingerprint.

Through the above, we know that the point of interruption, fork or twist in the fingerprint is the detail feature point, and these details feature points, which can be said to provide a fingerprint unique confirmation. Typical endpoints and bifurcation points and bifurcation points, isolated points, ring points, short lines and so on. By recording the direction of your fingerprint, the location of the feature point (through the Y axis to determine the location), you can create a unique fingerprint lock in the world, and the key is your fingerprint.

Because each fingerprint scanning location is not exactly the same, the focus point will bring different degrees of deformation, so there will be a large number of fuzzy fingerprints, so the key to fingerprint identification technology is to correctly extract features and achieve correct matching. Fingerprint identification involves many subjects, such as image processing, pattern recognition, computer vision and so on.

To identify fingerprints, the first is to create a fingerprint library, so that your original fingerprint data into the initial identification code. Fingerprint collection process as shown. Currently used for fingerprint acquisition mainly include: Living optical, capacitive and pressure-sensing. A capacitive fingerprint collection view that records and verifies fingerprints by contacting the skin and screen to identify the fingerprint's texture. Optically, the fingerprint is recorded and validated by light reflection imaging. The pressure-sensing type is imaged by sensing the texture of the semiconductor pressure sensitive material. After capturing the fingerprint, it will refine the fingerprint, highlight its fingerprint feature points, and facilitate the contrast verification.

Fingerprint verification on the phone is a new type of safety factor and a better way to verify, because the corresponding unlock fingerprint only you have a person, mobile phone security and personal privacy can be effectively protected. So many handset makers are scrambling to add fingerprint recognition to their phones. Kiss, is your phone safe enough?