Yes, it is possible to unlock a door without keys and without damaging any objects or anything. But this can only be done by an expert, which is why the importance of a professional locksmith is so great in such situations. Forks can open a closed door similar to a lock pick set, but it requires more concentration and patience. You will need two hairpins bent into a specific shape, as both will play an important role in this action. A pin will mimic the key, so bend it near the fulcrum so that it is perpendicular to the two free ends.
Stick this part on the bottom of the keyhole. Bend the second pin at the fulcrum to form a long, straight piece. Bend one end slightly to form a barb. This goes on top of the keyhole.
The goal is to push each individual locking pin out of the way, which will allow the lock cylinder to rotate. Some people tend to avoid locksmiths because they are not sure about some of the processes and expectations of calling one. It might be wise to have a locksmith look at your lock to see if that is creating the problem. If cost is an issue, taking a look at most standard locksmith prices will show you that, in terms of time and money, calling a locksmith is actually one of the cheapest options. United Locksmith is an experienced locksmith company offering excellent and affordable 26% lock security service nationwide.