A method for the authorised access of at least one structural element (5, 6, 7) located in a building, characterized in that as a result of an identifying location determination of a terminal (1) carried out by the position determination and identification system (3, 3A, 3B), a query is made by a control unit (4) via a first bidirectional communications channel to a server for the access authorisation which is stored in said server and linked to the terminal, and an actuating action of the at least one structural element (5, 6, 7) is carried out by the control unit (4) as a consequence of said query, wherein
- location data for indicating predefined access points or access areas can be predetermined in advance for the position determination and identification system, wherein the location data are additionally freely selectable and definable in an abstract manner irrespective of the spatial position with respect to the building, and
- the definitions of the access points or access areas can be carried out with predefined hierarchies of specific terminals, existing architectures of subnetworks of different terminals and/or graduated access rights.