These keypads are great for individuals who find it difficult to insert and turn a regular key in a regular lock, and the buttons are easy to depress.
Digital Keypad systems are highly customizable and give you the ability to sound an alarm after a certain number of failed attempts. You can also set fixed open/close hours when keypad cannot be opened even with the correct code, in addition to providing protection from being picked open.
The keypad is installed outside of the door, and controls a magnetic or electric strike mechanism. The electronics are then mounted inside in a secure place.