The keyhole of the security door is blocked by nails

I don't know, you can check the monitoring, or ask a repairman to take care of it for you.

Anti-theft door locks, the super glue used for the illegal division of the general keyhole is mostly 502 glue. Residents can try to dao will. >>>More

The keyhole sprayed by self-spraying paint will have a part of the dry paint inside. You use a needle or other tool to punch gasoline or thinner into the keyhole, let it wet for a while, and then poke it back and forth several times with a thin piece of iron to loosen and bring out the paint skin.

It is very nerve-wracking to be blocked by 502, if the plug is not deep, you can use a small hook bent by a steel wire and try to dig it out. You can also use a heat gun (the kind of several) to blow at the keyhole, blow for a while, and then try it with the key liquid trap key until the key can be inserted and the lock can basically be opened. If you don't carry a stool, be careful not to blow too hard to prevent the lock from melting. >>>More

Cover it with boiling water, and the glue is afraid of high temperatures.