Usually, office buildings are closed at night and may have several security guards available to make sure everything is fine. Doors and windows are also usually locked so that the last person who comes out always feels that the building is safe when they leave.
But during the day, doors and windows open and usually there are no security guards. So believe it or not, it's much easier for someone from a rival company or crazy person to steal something or cause panic during the day. You can purchase fingerprint door lock online.
So how do you prevent it? There is no way you can lock doors and windows with people in the building because of fire safety regulations so there must be other ways to secure the building.
The fact is there. The use of access control cards to improve security has been proven to function in thousands of businesses and every day more and more companies are beginning to realize the effectiveness of this system.
Access control functions because it separates the building area, only allow certain people with the right credentials to move from one place to another. What the company has to do is install a card reader next to the entrance to the restricted area.
They are designed to be as comfortable as possible for authorized personnel and frustrating experience for anyone who is not permitted to enter.