The Acsys keypad key is the best protection against lost/stolen keys. If someone finds a lost/stolen key, they cannot use it as a PIN is needed to be entered on to the key before usage. If someone inputs wrong PIN 5 times, the key will automatically be blocked and needed to be reset via the Acsysware management software.
If the key is lost/stolen, nobody can use it
If the key is lost/stolen, no lock change is needed
PIN can be changed by the owner
For convenient or emergency purposes, a keypad key can be left with friend/neighbor and PIN is given over the phone when needed