Smart locks are a convenient and secure way to manage access to your property, allowing you to control and monitor access remotely using a smartphone app or other connected device. One of the key features of many smart locks is the ability to set and manage multiple user codes or passwords, allowing you to grant access to specific individuals or groups.
In daily life, the use of passwords is becoming more and more widespread, from computers to cell phones to home password locks, everywhere. However, there are many people have such concerns: password lock fixed password is really safe? In reality, a variety of means of deciphering, so that our smart life encounter difficulties.
For the smart door lock, some users have raised such questions: the secret of the smart door lock is fixed, if at the time of opening the door, a thief hiding in the corner peeping, a few times down, secretly remembered my home door lock password pressing order, then,next time I am not there, he can easily burglarize the house. 
This sounds really bad, for users of these concerns, many of the smart lock to introduce a more secure “virtual password technology” to solve the hidden danger of peeking passwords.
The “virtual password technology” is to add any number of digits in front and behind the correct password, as long as the middle of a continuous correct password to open the door, so as to effectively prevent password leakage. Just do not change the real password sequence, before and after or in the middle of the insertion of multiple numbers can be achieved to open the lock. For example, if the correct password is 123456, you can add (8) (6) (7) 123456 (0) (2) (3) when you enter it, noting that the other numbers added are in parentheses.
Dummy password compared to fixed password, its security level is higher, more difficult to be snooped, so the risk of password leakage is smaller, feel free to increase the length, each time you enter the password has changed, can greatly increase the security of the password, thieves or burglars more difficult to obtain the real password.
Just do not change the real password sequence, before and after or insert multiple numbers in the middle can achieve unlocking. For example, if the correct password is 123456, you can add (8) (6) (7) 123456 (0) (2) (3) when you enter it, noting that the brackets are joined by other numbers.
Then there is no maximum limit for the dummy password? Yes, this depends on the length of the password set by the manufacturer of the smart door lock, for example, the longest set password limit is 20 bits, then the dummy password and the total length of the password can not exceed 20 bits. For your information, all YONANN smart locks for home use have dummy password with 8-12 numbers .
Compared to fixed passwords, dummy password technology is undoubtedly more secure, but is it unbreakable? Dummy password technology security level is higher, there is still the risk of leakage, through multiple snooping password input, you can integrate the password numbers to compare and find out the intersection between the arrays, so as to obtain the real password and crack the door lock password. Therefore, the security of the false password is also relative, the user is also more trouble when entering, slightly increasing the input efficiency and difficulty, but if you remember the original password, these minor problems can basically be ignored.
Fingerprint lock or other biometric smart lock core lies in fingerprint unlocking or other identification methods, password unlocking generally as an incidental function, biometric security is higher, but also one of the important development direction of the smart lock.
Most of the smart locks on the market today have a variety of unlocking functions, for security needs, with a virtual password technology smart door lock is the first choice for purchase. In normal use, it is also recommended to use more fingerprints, cell phone remote control and other ways to unlock the door , less or no password and mechanical keys to unlock the locks.