[Claim 1]
A security system comprising:
a security starting portion setting time until security for a security target area in a building is started after identification information about a user is read by a reading device provided corresponding to an entranceway, according to the identification information. [Claim 2]
The security system according to claim 1, wherein, if identification information about a wheelchair user is read by a reading device, the security starting portion sets a longer time than a case where identification information about a normal user is read. [Claim 3]
The security system according to claim 1 or 2, further comprising:
a security releasing portion releasing, if identification information about a user who enters an occupied part in the building for the first time is read by a reading device provided corresponding to an entranceway leading to an inside from an outside of the building, security for a common part corresponding to the occupied part,
wherein the security starting portion sets time until the security for the common part corresponding to the occupied part is resumed after the security is released based on the identification information about the user who enters the occupied part for the first time, according to the identification information. [Claim 4]
The security system according to claim 1 or 2, wherein the security starting portion sets time until security for a common part is started after identification information about a user who exits an occupied part last is read by a reading device

provided corresponding to an entranceway leading to the common part from the occupied part in the building, according to the identification information.