Security Problems Existing in Fingerprint Time Attendance Access Control Machine

(1) Denial of service attack, making the fingerprint collector not working and unable to input fingerprints.

(2) Forgery fingerprint attack, use artificial fake fingerprint Song instead of human finger on the collector.
(3) Trojan horse attack, injecting Trojan programs, disguising as the fingerprint input program of the automatic identification system to steal the fingerprints of legitimate users.
(4) Reuse attack. In network-based fingerprint identification applications, fingerprint images or fingerprint features transmitted on the network can be stolen and reused by third parties. For denial of service attacks and Trojan horse attacks, third-party technologies, such as firewalls, should be used. Technology, virus detection technology, etc. For denial of service attacks, it is necessary to prevent deliberate damage to the collection equipment or damage to the working environment. For counterfeit fingerprint attacks, you can start from the sensor, so that the sensor can sense living and non-living objects. For repeated use attacks, The technologies currently used mainly include encryption, time stamps, digital signatures and digital watermarks.
How to perform efficient fingerprint indexing is also the subject of current research, such as triangle-based indexing method, indexing method using various features, triangle-based indexing method using Hmh table, extracting various triangles with nodes as vertices, in the M table Each record is a triangle and the name of each fingerprint containing the triangle. The threat method "combines various features for classification, including orientation field, triangle and texture features. The calculation process of index features is more complicated, and for height Distorted fingerprints, these features are not stable.