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Home > Technology > Fingerprint Recognition Technology > Sensor
Currently, there are optical, semiconductor, and LE fingerprint recognition sensors.
Optical Fingerprint Recognition Sensor obtains a fingerprint image through the subject pressing or rolling their finger on a lens and light source. The sensor screen is made up of industrial diamond (LANTAN).
Semiconductor Fingerprint Recognition Sensor acquires fingerprint images either by reading changes in electric charge according to the pressure and thermal impact of the finger on the sensor, or by using an electromagnetic field or ultrasonic waves to convert signals into images. The sensor screen is a thin film.
LE Fingerprint Recognition Sensor acquires fingerprint images by using chemical materials that emit light when a finger is placed on them. Its sensor screen is also a thin film.
?1st-generation fingerprint recognition sensor
?Highly precise and mechanically stable
?Highly durable with intensity of 8.5
  (diamond's intensity is 10.0).
· Requires lens and light source. Bulky,
  awkward design
· Low cost, good for mass production
· Slim and variable designs
· Main Board is vulnerable to static electricity
· Susceptible to corrosion
· Can be damaged by impact
  (Surface is made of film, and thus is vulnerable
  to sharp objects)
· Low cost, good for mass production
· Slim and variable designs
· Weak against impact (Surface is made of film,
  and thus is vulnerable to sharp objects)
· Sensor needs to be replaced after a certain
  period of time

Union Community뭩 fingerprint recognition sensor boasts high durability and stability.
If produces high-quality fingerprint images that eliminate distortion and afterimage crated by the optical sensor.