METHOD FOR OPERATING A DATA PROCESSING INSTALLATION AND DEVICE FOR IMPLEMENTING THIS METHOD

摘要

Method for operating a data processing installation (1) by entering data recorded on a data carrier (5). In order to avoid an unauthorized use of such a carrier by a third person, especially in case of loss, the data processing installation (1) can be set so that the operation by the data carrier (5) is inhibited. The data processing installation (1) has an inhibit circuit (14) preventing the operation by a predetermined data carrier (5). It is also possible to control the transport of the data carrier so that a predetermined carrier (5) will not be released after its introduction into a read and write device (4).