Biometric application in the hottest smart lock wh

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Why is fingerprint identification lock the most popular biometric application in smart locks

with the continuous emergence of biometric technology in the commercial field, more and more biometric technology equipment or functions are applied by people. In the field of intelligent lock, in addition to the common fingerprint lock, there are also face recognition lock, pupil recognition intelligent lock, vein recognition intelligent lock, etc. However, what are the characteristics of various biometric technologies

fingerprint recognition technology

medical evidence shows that everyone's fingerprint lines are different in patterns, breakpoints and intersections, and have unique simultaneity and permanence. Fingerprint recognition technology collects fingerprint feature imaging through optical, semiconductor electronic signals, ultrasonic, temperature difference and other methods. After digital processing and analysis, it finally extracts acceptable fingerprint digital features. 1. It overcomes the difficult information of spray free flow marks and welding lines, and is used as a reference template or directly for comparison. After years of development and market validation, fingerprint identification technology is currently a relatively mature and most widely used biometric technology, which has certain advantages

advantages of fingerprint recognition technology: 1. Strong practicability: fingerprint acquisition and use are relatively convenient, fingerprint head is small, acquisition cost is low, and it can be applied to a variety of devices. 2. Good stability: fingerprint recognition technology is relatively mature, after long-term market inspection, and the fingerprint itself has uniqueness and permanence, so fingerprint recognition is relatively stable and reliable. 3. Good convenience: the speed of scanning fingerprints is very fast and it is very convenient to use; 4. Fingerprint recognition products have better cost performance: fingerprint acquisition head is more miniaturized and cheap

face recognition technology

face recognition technology, also known as face recognition technology. People have different faces, or a pair of twins can be found by anthropological measurement. Face recognition technology analyzes the orientation of facial organs and feature parts through "local feature analysis" and "graphics and neural recognition algorithm", extracts digital information, and then compares, judges and confirms it with the template information in the database

advantages of face recognition technology: face recognition is active, people can be recognized without touching equipment, and even face recognition can actively recognize people without people's knowledge

disadvantages of face recognition technology: 2. Low accuracy: the current face recognition methods mainly focus on two-dimensional images. Due to the influence of illumination, posture and expression changes, the accuracy of recognition is greatly limited. 3. High cost: the improvement of face recognition technology depends on the improvement of feature extraction and comparison technology, and the equipment for image acquisition is relatively expensive

iris recognition technology

the iris is located behind the cornea and before the lens. The iris structure is stable, and its color is different according to the amount and distribution of the pigment contained. The iris recognition system uses the video method of monochrome TV and camera technology combined with software to obtain the digital information of the rainbow membrane, and the scanned information during verification is compared with the pre stored template information to make identification

advantages of iris recognition technology: it is convenient to collect biometrics

disadvantages of iris recognition technology: 1. Low application popularity: iris recognition system has been tested many times, but it has not been applied on a larger scale. 2. High cost: large image acquisition equipment; Cameras are expensive

heart rate recognition technology

heart rate recognition is also a similar principle, because a person's heartbeat rhythm is generally stable, and everyone's heartbeat shape is different and will not change. Even if people's heartbeat accelerates, the overall shape of the heartbeat will still not change. Once, it can identify people. One of the heart rate recognition technologies is the photoelectric sensing measurement method using light reflection. For example, pulse measurement is based on photoelectric technology; The other is electrode sensing measurement using potential

advantages of heart rate recognition technology: strong practicability, small size of heart rate recognizer, which can be applied to a variety of devices, and even can be carried around

disadvantages of heart rate recognition technology: the accuracy of heart rate recognition needs to be improved, and the body type is photoelectric detection

voice recognition technology

human physiological, psychological and behavioral characteristics and other voice parameters will be reflected in human voice waveform. Human voice spectrum, including the time change of curve and the characteristics of driving sound source, are different. It can extract the features of different people's voice changes greatly and the same person's voice changes little for analysis, comparison and recognition

at present, the mainstream application of voice recognition system is: input human voice through microphone, extract sound through digital signal processor digitization and software compression, and make 3D printing materials from waste plastics. The technology still needs to study the image information and save it in the database. When applying, match the immediately collected voice with the characteristic information in the database to make identification

advantages of voice recognition technology: 1. Voice recognition is a non-contact recognition technology, which users can naturally accept. 2. Voice recognition technology has better convenience, economy and accuracy. It is a new measuring appliance that has made significant improvements in the structure and material of the original product, resulting in changes in performance and technical characteristics

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