Take out a lock, put the tin foil in a special thing, insert the lock core with the same thing, and then fix the lock core on the vice and shake it left and right 1 min, and the lock can be opened smoothly.

2. Tap the lock cylinder

Insert the master key into the lock cylinder, and then tap the other end of the key with a hammer. When knocking, try to twist the master key to see if it can be opened. Usually it can be opened.

Step 3 Insert the lock

Find a lost card, insert the card into the door, then slide the card to the position of the locking tongue and squeeze it inward to open the door. This method is simple and very practical.

Precautions for unlocking:

First of all, after the unlocking master comes to the door, he must take the initiative to show the unlocking certificate to the user. After all, I have studied art for many years, and through a series of processes such as unified service training, regular skill assessment and public security filing, this certificate fully proves that our master is professional.

Secondly, users must show their identity documents (ID card, passport, driver's license, etc. ) and proof of residence (real estate license, lease contract, etc.). ) to the master. After the lock is unlocked, the master needs to verify the user's identity and residence certificate again, so that he can report to the public security bureau after the end.