In many film and television works, we can see some of the unlocking masters' miraculous techniques, and open the door locks when ordinary people have not yet reacted.
The locksmith is at work
For such a skill, I wonder if you would like to have it when you are faced with a door lock that is difficult to open? It's just that we haven't realized this wish yet, and some hated thieves have gradually mastered this skill after a long period of "exercise".
The thief is unlocking the lock with a simple tool
Not only that, even in today's life, many people have installed fingerprint locks to prevent thieves from entering, but they still found an amazing vulnerability! As long as the thief enters the community and uses the sticker sleeve to take the fingerprint, the fingerprint lock can also be opened.
Fingerprint lock
For the authenticity of this matter, I believe that many people are skeptical, is it really possible to open the fingerprint lock only with the rubber sleeve? To understand the answer to the question, it is necessary to understand the modern means of committing crimes by thieves and the fingerprint recognition methods that are currently popular on the market. Only in this way can we know what kind of approach should be taken to better prevent thieves.
The modern modus operandi of thieves
In people's traditional impression, thieves often use a variety of criminal tools to achieve their goals when committing theft crimes. Even a seemingly inconspicuous paperclip has the potential to "turn decay into magic." Fortunately, after the emergence of various fingerprint locks today, this traditional "skill" has finally lost its due effect.
Traditional craftsmanship - paper clip unlock
However, what people did not expect was that in order to achieve their own goals, the thieves actually did the same "keep pace with the times". According to relevant reports, many thieves today will use various ways to obtain fingerprints left by people on the door when they open the door, and make fingerprints in a special way after extracting the fingerprints. In this way, as long as the owner is not at home, the thief can use the help of the fingerprint to carry out the theft operation.
Finger mold
I believe that nowadays, when many people go out, they often see that their doors are stuffed with various advertising leaflets. In the face of such leaflets, although we are angry but also very helpless, after all, no one knows when the staff who distributed the leaflets left the leaflets. But what is even more infuriating is that thieves often mix in with these leaflet workers.
Flyer advertisement on the doorknob
While handing out leaflets, they also take the opportunity to steal fingerprints from doorknobs. In this way, even if the owner's family places a camera at the door, it is difficult to determine who is the person who stole his fingerprints. For this reason, while people are angry, they will not only break into a cold sweat for the thieves' methods.
So as far as modern fingerprint recognition is concerned, is there any way to prevent thieves from committing crimes? To understand this problem, we must first know, in modern society, what are the common fingerprint recognition methods on the market? How do they work? More importantly, which fingerprint recognition methods can effectively combat the theft of thieves, and which methods need to be improved to some extent?
Anti-theft is important
Optical identification, capacitance recognition and ultrasonic identification
With the development and progress of human scientific and technological civilization, fingerprint unlocking has become one of the most common unlocking methods for people today. Among the fingerprint unlocking, optical recognition, capacitance recognition and ultrasonic recognition represent fingerprint unlocking technologies at different stages. We want to know if the sticker sleeve used by the thief to take the fingerprint can really open the fingerprint lock? That is to understand these three different stages of fingerprint unlocking technology, what exactly it works.
The range of fingerprint unlock applications is extensive
The first is optical identification technology, which is actually relatively "primitive" compared to the other two optical identification technologies. Its working principle is also very simple, that is, after the fingerprint is taken, it is compared with the fingerprint stored in the fingerprint library. As long as the comparison is successful, it can get access permissions, such as opening the mobile phone screen and door lock in our daily life, which is often used in this way.
Principle of optical identification
Secondly, this is the capacitance identification technology, although the identification process of this technology is similar to optical identification, but the specific working principle is different to a certain extent. If you want to complete capacitance recognition, you must identify the electrolyte under the human skin because of the amplitude change between fingerprints and the difference in capacitance. Once it is found that there is a certain difference, it will eventually lead to identification failure.
Principle of capacitance identification
For why the principle of capacitance recognition and optical recognition is different, many people may not be able to understand, after all, no matter which recognition method, it seems to be through the fingerprint pattern analysis to determine whether to have access rights. But in fact, the biggest difference between capacitance recognition and optical recognition is that optical recognition only needs to make the same texture, while capacitance recognition will involve blood flow of fingers and skin moisture.
In other words, if people use optical fingerprint locks in their homes, the thief can easily open the fingerprint lock after stealing the fingerprints and making them into fingerprints. However, if the home uses a capacitive recognition fingerprint lock, then in addition to the fingers of the living person, there is no way for any fingerprint mold to open the fingerprint lock.
Capacitive recognition fingerprint lock is more secure
The main reason why humans will use fingerprints as an important basis for unlocking is that people have not found the same fingerprints so far. This uniqueness is difficult for other characteristics of the human body to have. At this point, capacitance recognition has once again added additional judgment conditions such as blood and temperature, which is completely the most secure fingerprint unlocking method in the current society.
Everyone's fingerprints are unique
Finally, there is ultrasonic recognition, which directly penetrates the finger to reach the dermis layer. However, as far as the current human technical means are concerned, the recognition ability of ultrasonic recognition methods on the surface of the skin is very strong, and the recognition ability after penetrating tissue is relatively weak. Therefore, although ultrasonic recognition methods have the hope of identifying the finger
Principle of ultrasonic fingerprint recognition
The deception of the mold, but also not as likely as people think.
Therefore, as far as the three circulating fingerprint recognition methods on the market are concerned, the safety level of the capacitor recognition method should be the highest. However, it is worth noting that fingerprints do not have to reach a 100% coincidence to unlock the lock. As long as a certain threshold is reached, the fingerprint lock can also be opened. After all, when people are fingerprinting, sweat, dirt and wear will make you unable to open the fingerprint lock. The existence of this threshold actually makes the capacitor identification have the possibility of being deceived.
capacitor
Coping methods
So in the case that every fingerprint recognition method has certain defects, how should we better prevent the occurrence of theft? In fact, the answer is very simple, that is, additional judgment conditions. As mentioned earlier, the reason why capacitance recognition is safer than optical recognition is because it attaches conditions such as blood and temperature. And we can do the same.
To take a simple example, after fingerprint recognition, we can set the password to unlock the lock. In other words, passing the fingerprint verification does not mean that you can easily open the door, just the opportunity to try the password. Once the password is entered incorrectly, it is naturally impossible to open the door.
Double locking is more secure
Some people may wonder what if the thief takes the opportunity to learn the password after stealing and stealing fingerprints? Or in other words, in some film and television works, some people have tried to combine passwords through the analysis of traces on digital cases, and finally cracked the password. To deal with such theft, in fact, the way to prevent it is also very simple.
We assume that the password lock in our home is a combination of six digits, so when setting the password, it can be set to ten digits or twelve digits. Except for the six-digit requirement of the password, all the other numbers can be changed every time, without having to be memorized at all. That way, even if you unlock the lock in front of the thief, he certainly doesn't know which numbers are the really correct password. And to try out six correct numerical answers out of ten digits, unless the thief has the potential to become a mathematician.
Not every thief has the wisdom of a mathematician
In fact, in modern society, no matter what kind of theft technology the thief masters, the initiative is always in our own hands. Therefore, even if the thief can use the sticker sleeve to open some fingerprint locks after entering the community, we don't have to worry too much. As long as the prevention work is done well and the safety awareness is improved, it is natural to avoid the occurrence of burglary.