Patent ID: 7536709

Claim:
An access control system, comprising: one or more network devices, each of the one or more network devices further comprising: input means for accepting a request for generation of a dynamic access key and portable wireless device identification information identifying a portable wireless device inputted via a user interface in each of the one or more network devices; generating means for generating a dynamic access key based on the portable wireless device identification information inputted by said input means, the dynamic access key being configured for display on the one or more network devices; transmitting means for transmitting the dynamic access key; and display means for displaying the dynamic access key on the one or more network devices; and an access control apparatus, the access control apparatus further comprising: receiving means for receiving dynamic access keys from the one or more network devices, and for receiving the dynamic access key and the portable wireless device identification information via a wireless access point from the portable wireless device on which the dynamic access key was manually entered by a user via a user interface; obtaining means for obtaining address information corresponding to the dynamic access key received from the portable wireless device; deciding means for deciding whether or not the dynamic access key received from the portable wireless device corresponds to the portable wireless device identification information; and detecting means for detecting address information for the one or more network devices from which the dynamic access keys are transmitted.