The anti theft door key is lost, can the confidant open it?

Our regular locksmith fee standard signed by the public security department here: 50 for unlocking, and you need to show your documents after opening the door.

The anti-theft door can not be opened without a key, otherwise how to prevent theft, if it can be opened casually, it is not called an anti-theft door. Anti-theft door (full name: anti-theft security door), with both anti-theft and security performance, can be made of different materials, but must meet the standard testing and obtain the security product production certificate. >>>More

Usually a security door has 2 A keys, 5 B keys, and 1 C key. The A key, also known as the "worker's key", is used by workers during renovation. At the end of the renovation, use the C key to turn around in the lock, and the A key will automatically become invalid, and you can only use the B key to open the door. >>>More

You don't want to lock it, just open it, buy a six-wheel grind and change it into a turn OK. If you want to lock it, give 10-20 yuan to find a key to help you open it.

It depends on what kind of security door, some can't be opened, and some can be opened. You'd better take a picture.