METHOD OF CONTROLLING ACCESS

摘要

A method of controlling access comprises detecting at least one access request containing a specified caller number and storing the specified caller number and the time of the request, detecting at least one call, identifying the caller number and storing the identified caller number and time of the call. The access request is denied unless the specified caller number of the access request matches an identified caller number, and the time between that access request and the call is less than a predetermined period.