Abstract: System for electronically providing an access authorisation for a user, to a location selected by a user, comprising at least one access report device, which reports a user identification of the user, which is in each case stored on at least one portable data carrier of an user having access authorisation, via a data network to a forwarding device, which electronically forwards the reported user identification via the data network to at least one access read device, which is provided at the respective selected location and which grants the user access to the selected location if the user identification which is stored on the user's portable data carrier and is read off from the data carrier by the access read device corresponds to the user identification which is electronically forwarded to the access read device.