Abstract: With the method, mobile data carriers (IM) are initialized at assigned decentralized read and write stations (WR) within the framework of an authorization system (A). At an authorization authority (HA) in a secure environment (g) initialization data (DI, A-I, I-I) are generated by authorization means (AM) and are sent to a decentralized authorized read and write station (A-WR) over a network (N) in a secure communication and with security rules in correspondence with the authorization system (A), where the mobile data carriers (IM) are initialized with the initialization data (DI), and/or wherein the initialization data are sent to a decentralized read and write station (WR) over the network, by means of which the read and write station is initialized. This initialization method enables new possibilities for the application and exploitation of systems of this kind.

Abstract: The security reversible key with an assigned cylinder (Z) has a blocking groove (BN) with a coded blocking depth (B1, B2, B3), which runs parallel to the axis of the key (x) from the tip of the key to at least the first position (P1) of a row of tumbler pins (A2) on the key. In the assigned cylinder, at least at the rearmost coding position (P1), a pair of tumbler pins corresponding to the blocking groove (BN) with a blocking tumbler pin (BZ) and an extended blocking counter pin (BG) are foreseen, whereby the blocking counter pin (BG) impinges on the cylinder housing (10), if the blocking groove is insufficiently deep and, with this, the complete insertion of a key with an insufficiently deep blocking groove is blocked by the pair of blocking tumbler pins. Simultaneously, the blocking tumbler pin (BZ) with the counter pin (BG) at the position (P1) also serves as coding tumbler pin.

Abstract: An identification medium with passive electronic data carrier and contactless, encoded communication with an associated read and write station (WR) has in a memory (42) a data organization with a common data field (CDF), with invariable, uncopiable master data (44), with a segmentable application data field (ADF), in which several independent applications can be written in application segments S1, S2, S3). A hierarchical authorization system (A) valid for all the identification media (IM-S) and all the read and write stations (WR) is established, with which each identification medium (IM-S) must be initialized and which ensures the mutual uninfluenceability of all the independent applications.

Abstract: The contactless identification carrier which can be carried by a person and having access functions for particular areas, particularly skiing areas, is constructed as a separate, flat carrier element and is fixed in interchangeable, portable manner on a personal bracelet PA. The carrier element (1) contains a passive, integrated, electronic data carrier MI with processor, as well as an integrated antenna (2) surrounded by a dielectric (4) and a detachable fixing device (3). The antenna has partly open radiating surfaces FAO, which are not covered by electrically conductive parts of the personal bracelet PA. This gives a universally usable identification and access medium with very good comfort and convincing practical characteristics.