Do you know about Supra locks? They are high-tech versions of the old combo locks we are all used to, and they have have a few advantages. They are opened by an electronic keypad that inspectors carry with them and they keep records of who accessed them and at what time. Combo locks are still common in many places but it seems that they are slowly being replaced by Supra Locks, which are generally considered to be superior. To find out more about the pros and cons of both types of lock boxes check our our new article on lock boxes for inspectors.