Replacing the traditional key with an RFID key - For this question, there is mention of "attempts have been made to pick the door lock". Out of the options provided, only the option to replace the current door key with an RFID key directly addresses this issue. The other options can be viewed as preventative access control systems/ deterrents as well. Preventative access control - An access control that is used to stop unwanted or unauthorized activity from occurring, these could be policies, firewalls, physical barriers etc. RFID (Radio Frequency Identification) - A type of key card/fob access control system that uses a radio frequency signals to communicate between a reader and an RFID tag. You would place the tag/card near the reader and if the reader identifies the signal as belonging to an authorized user, they will be allowed access.