Basically, the photos of Scissorhands within 1.5m can restore 100% of the subject's fingerprints, and photos within 1.5m-3m can restore 50% of the fingerprints. It is difficult to extract fingerprints from photos over 3m. "
Tool for making fingerprint film
Fingerprint information is extracted from photos, and then the fingerprint film is made of professional materials, which can be used by criminals in various channels to identify identity through fingerprint technology, such as fingerprint door lock and fingerprint payment.
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When this statement came out, it quickly set off a hot discussion on the Internet.
Are fingerprints really that easy to see through? What do professionals say?
Zang Yali, an associate researcher at the Institute of Automation, Chinese Academy of Sciences, told reporters that taking photos and taking fingerprints should be carried out under very harsh conditions. The camera has good resolution, good imaging angle and good ambient light. It's not that you take a picture with a camera, and your fingerprints will be there.
Although fingerprint extraction has high requirements for photos, the function of taking photos is becoming more and more powerful. Many young people take many selfies a day, so it seems not difficult to find some photos with clear fingerprints!
Therefore, Director Andy reminded me not only not to provide your fingerprints to strangers, not to enter your fingerprints on untrusted equipment, nor to take photos of Scissorhands within 3 meters, let alone post photos with your fingerprints on the Internet. In addition, if there is a fingerprint door lock at home, try to set the fingerprint and password to open it, so as to ensure safety.