Fingerprint door locks are always nothing new. With the spread of intelligent homes in the past few years, the fingerprint locks have entered thousands of households. Today's fingerprint door locks, in addition to removing the cumbersomeness of the key, have been given various intelligent functions, such as connecting with other intelligent homes and becoming a switch to an intelligent scene. So today's fingerprint door locks are more known as smart door locks。
However, the security of the smart door lock has always been a matter of great concern, as many of the black box incidents that have been exposed in previous years have been remembered. There is also a lot of breaking news on the internet, and it discourages people who want to buy smart locks。
Today we're talking about the security of the smart door lock and the smart door lock, hoping to give some advice to friends who want to buy the smart door lock。
Fingerprint recognition techniques are everywhere on our smartphones, from previous physical fingerprinting to the current screen fingerprinting, which can be said to be quite sophisticated. And fingerprinting is the core of the whole smart door lock。
There are three main methods of fingerprinting that are now common: optical fingerprinting, semiconductor fingerprinting and ultrasound fingerprinting。
Optical fingerprint recognition
Let's start with the first one. The principle of optical fingerprint recognition is actually the reflection of light, and we all know that the fingerprints themselves are condensed, that they reflect when they reach our fingerprints, and that the light receiver can draw our fingerprints by receiving the reflection back. More like laser radar mapping。
Optical fingerprint recognition is usually on the card player, and the screen-based fingerprinting technique on the mobile phone also uses optical fingerprint recognition. Today's optical fingerprint recognition can be very fast。
However, one disadvantage of optical fingerprinting is that it is not possible to identify live bodies on hardware and is easily defunct, usually by means of software algorithms, which, if not processed, can easily turn over。
Last year, one plus seven pro was exposed, and it took only five minutes to decipher through the production of a simple fingerprint. In addition to this, optical fingerprinting is also vulnerable to liquid effects and the success rate of wet hand unlocking is reduced。
Ultrasound fingerprint recognition
Ultrasound fingerprint recognition is also called radio-frequency fingerprint recognition, which is based on a similar principle to that of optical reflection, except that ultrasound uses the reflection of acoustic waves, which is actually a reduced version。
Since sound waves are used and it is not to be feared that refractions of water will lead to a decrease in recognition, ultrasound fingerprint recognition allows for a wet hand unlocking. However, ultrasound fingerprint recognition, as in the case of anti-cryption and optical, does not allow for physical recognition on hardware and can be deciphered by fingerprints, which continue to rely on algorithms。
Semiconductor fingerprint recognition
Semiconductor fingerprinting is primarily the collection of fingerprint images using the principles of the electric capacity, the electric field (i. E., what we call the electrons), temperature, pressure. When the user puts his finger on the face, the skin forms an polar plate of an electric condensed array, the back of which is an insulation plate。
As the distance between the ridges and valleys of fingerprints in different regions is not equal, the electrical capacity of each unit changes accordingly, resulting in the availability of fingerprint images。
Semiconductor fingerprinting has the advantage of low price, small size and high recognition, so most of the smart door locks use this option. And the semiconductor fingerprinting has one of the first two non-existent features, namely, live recognition. It's hard to crack the old silicone。
Nor does it mean that semiconductor-style recognition of living organisms is 100 per cent, and semiconductor fingerprint-based identification of so-called living organisms is not applied to fingerprinting organisms and is inherently dependent on the material properties of the skin, which means that although traditional silica-jet fingerprints cannot be deciphered, it is possible to decipher with materials similar to skin materials。
In general, there is a risk of being decrypted, regardless of the fingerprint identification, just to say that it is. However, fingerprint identification, whether hardware or algorithmic, is now mature and very difficult to crack. After all, all can pass the level of payment certification, which is necessarily extremely secure。
Unresolved key hole
Most of the smart door locks on the market still hold key holes, and users can also open them with traditional keys, in addition to being able to unlock them with fingerprints。
The keyholes are mainly designed to identify the failure of fingerprints or to open the door when the power locks are depleted. However, the presence of a keyhole suggests that the lock can be removed by technical means。
The current level of the market can be divided into levels a, b and c, which are mainly based on the level of exposure to violence and technical exposure。
Level a locks require a technical lock not less than one minute, level b locks not less than five minutes, and even the highest level c locks require only a technical lock not less than 10 minutes。
That is to say, most of the locks in the market today, regardless of rank, are just paper-like in front of professional lock-openers, which is just a matter of time。
Security may not be the most important
Is that what we've said before, rather than adding to your concerns about the security of the locks? In fact, today's pervasive camera, powerful face recognition and the emergence of mobile payments, which reduce household cash, have led to a sharp increase in the cost of burglary, which has almost declined in the past few years in the provinces and cities。
In other words, safe and unopenable locks may be less deterrent than having a camera at the door。
Fearing that the smart door locks are unsafe may not make much sense, and after all, the home locks may not be safe. We need to focus more on how convenient it is to buy the smart door lock。
The first thing we have to consider is the compatibility and interoperability of the smart door locks, which, after all, have been on fire only in recent years. Most people have upgraded the normal mechanical door locks to the smart door locks, so it is very important that the smart door locks be compatible with the original door. If they are not compatible, it is a very difficult thing to buy back and find that they cannot be installed。
The smart door locks are mainly designed to make it easier for us to carry the key. So the ease of the smart door lock is particularly important. The ease of doing so is mainly reflected in the fingerprint recognition rate, which results in a scratch on the finger or a slighter older person's finger. It is important whether the smart door lock is recognized, after all, that we do not want to have the smart door lock on our body。
Of course, if the fingerprints really fail, are there any other unlocking options, such as password unlocking or nfc unlocking? A point that needs to be noted is whether the password is unlocked or not, such as false passwords。
Of course, the sustainability of the smart door lock is also a place that requires special attention. The majority of the locks are powered by internal batteries, which requires that the continuation of the locks be as good as possible, or that frequent charging or replacement of batteries be difficult。
In the event that the intelligence is out of power and there are no batteries available for replacement, is there an emergency response for temporary power supply or temporary unlocking? Some smart door locks now leave a charger interface that can be used to provide emergency power with recharging。
At the end
There is now no need to be too worried about security as long as there are smart door locks for compliance. When you choose to buy, you should pay more attention to the smartness, interoperability, ease, etc. Of the smart door locks, rather than simply the safety, or the fact that the smart door locks that are bought are easily used not to prevent theft, but to prevent yourself from entering the house。
