Is the door into the door, the door on the day
In addition, if you do not go home, and did not bring ID cards and other documents (unlock the company need to unlock the document) there is a way, but more dangerous, that is, into your neighbors next door, outside the window, from inside open. Very dangerous, not recommended. If you have to do so, it is recommended to tie the rope on the body, and you need someone to hold on to you, to prevent falling.
This and the previous plug with the plug is a principle, you must manually open the inside, but I do not know how to unlock the company.
If you are talking about the door, unfortunately, on the outside with the key is not open.