Methods, systems and computer program products provide time-restricted passcode access to a restricted access area by: (a) electronically generating a time-limited visitor access passcode that is operational for a security system for a limited time duration; then (b) electronically accepting the visitor access passcode in a security entry control access device in communication with the security system to allow a user with the visitor access passcode a time-limited entry to a restricted area; then (c) automatically electronically preventing user access to the restricted area using the visitor access passcode with the security entry control access device after a certain time or expiration of a certain time period. Embodiments of the invention may be particularly useful for allowing visiting meeting participants physical access to a restricted area in a building to attend a scheduled meeting.