Abstract: The device may include a contactless element and a set of least two auxiliary elements. Each auxiliary element may include a slave SWP interface connected to a same master SWP interface of the contactless element through a SWP link, and a management module configured for activating at once only one slave SWP interface on the SWP link.

Abstract: The device may include a contactless element and a set of least two auxiliary elements. Each auxiliary element may include a slave SWP interface connected to a same master SWP interface of the contactless element through a SWP link, and a management module configured for activating at once only one slave SWP interface on the SWP link.

Abstract: Proposed is a portable data carrier for use in a plurality of applications having a memory device containing at least one data field (21, 31) which can be accessed in several modes by applications realized in a card application device, and an access control device (15) for controlling the accesses to the data fields (21, 31). Each data field (21, 31) has a table (23, 24, 33, 34) assigned thereto which assigns an access right to each possible access mode. Each application accordingly has at least one access right assigned thereto. In the case of an access intent the access control device (15) checks whether the application intending the access has the access right necessary for the intended access.