SELECTION OF ACCESS CONTROL APPARATUSES ON AN ACCESS AUTHORISATION VERIFICATION APPARATUS ON THE BASIS OF INFORMATION FROM A TRANSMISSION

摘要

A method having the steps of obtaining temporal information communicated to a first device; carrying out one or more of the following tests: a test to determine whether the first device is in a state following an initial operation, a battery replacement or other power outage, or a reset, a test to determine whether a deviation between temporal information of the clock and the communicated temporal information is less than or equal to a threshold which is specified, and a test to determine whether the communicated temporal information has the same date as the temporal information of the clock; and synchronizing the clock using the communicated temporal information if all of one or more defined conditions are satisfied, wherein one of the one or more conditions requires that at least one of the one or more tests carried out has a positive result.