How to use the 'virtual password' of the smart lock? You'll understand after reading it.

Many people can see the feature of 'virtual password' written on the password function in the promotional materials when buying a lock' target='_blank'>smart lock. Although the use of this function can be as easy to understand as possible in the publicity copy, how can this function be used in the actual application process and how can the security of the password be guaranteed? According to the data, the irregular numbers and letters that most people can remember in a short period of time are mostly 7 digits. Unfortunately, as long as it is a smart lock with a password input function, the length of the verification password is usually 4-6 digits. , There are few smart locks that can set more than 6 digits password. If the password is too long, it will be a problem for memory. In other words, it is easy for strangers to remember the password when they see it. Although the security can be improved by frequently changing the password, it is easy to forget the password over time, and it will be more troublesome. Therefore, increasing the password length in disguise can also improve the security, and the 'virtual password' was born to increase the length of the password. As mentioned above, it is easy to be peeked if you do not change the password. If you change the long password, the user may not remember it, but if you change the password frequently, the user will not remember it. The virtual password is used in the simplest way to make up for it. Because of these three shortcomings, the length and content of the correct password remain the same. Add randomly pressed numbers before and after the correct password. As long as there is a complete and undivided correct password in the entire string of numbers, the verification can be passed. Adding random numbers before and after the correct password can increase the overall length of the input number, and it will prevent a large number of people from remembering the password at a glance. The virtual passwords added before and after the correct password can be changed arbitrarily, which increases the frequency of password replacement in a disguised form. In this way, the real password will be 'crowded back and forth' and protected by a dummy password, which improves the security of the real password. As for the use scene, it must be in a situation of 'being monitored and cannot easily get rid of being monitored'. In addition to being tracked and other special and rare situations, more situations are when there are acquaintances in front of the door. I'm sorry to block the door tightly. Of course, in this case, using fingerprints to open the door is more concealed and convenient. Fortunately, although the virtual password technology is not so commonly used, given that the difficulty is not so high, and the effect is really good when used, as long as it is a smart lock with a password input function added to the smart lock, the vast majority All have this 'virtual password' function. When using it, it must be noted that the length of the 'virtual password' is not arbitrary. The smart lock will make certain restrictions on the length of the 'virtual password' including the real password, so you need to pay attention when using it.
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