Abstract: In a method and an arrangement for detecting skinprints, in particular fingerprints, it is provided that at least one strip sensor comprising at least one elongate narrow sensor line detects the structure of the fingertip when the fingertip passes over the strip sensor, that at least one optoelectronic speed sensor continuously determines the finger movement, that the fingertip is moved over at least one optoelectronic speed sensor and the strip sensor, and that the determined finger movement is used to correct an image of the finger structure that has been distorted as a result of non-uniform movement. Preferably, the speed sensor evaluates the Doppler shift of a modulation of the modulated laser light reflected at the moved finger surface.

Abstract: An electrical or electronic data/document carrier as well as a method of communication, for the contactless transmission and/or for the contactless exchange of data and/or of energy, between at least one base/central station and at least one electrical or electronic data/document carrier in such a way that data and information cannot be read from the data/document carrier without the agreement, knowledge and/or assistance of the user or owner of the data/document carrier. The data/document carrier can be moved to and from between a first position defined as an unfolded or opened state and a second position defined as a folded or closed state, and the data/document carrier is coupled to the base/central station essentially only in the first position or essentially only in the second position or essentially only in a position between the first position and the second position.

Abstract: In order to further develop an electrical or electronic data carrier or document carrier (100) as well as a method of communication, in particular for the contactless transmission and/or for the contactless exchange of data and/or of energy, between at least one base station or central station, in particular at least one read/write station, and at least one electrical or electronic data carrier or document carrier (100) in such a way that data and information cannot be read from the data carrier or document carrier (100) without the agreement, knowledge and/or assistance of the user or owner of the data carrier or document carrier (100), it is proposed that the data carrier or document carrier (100) can be moved to and from between a first position (A) defined as an unfolded or opened state and a second position (B) defined as a folded or closed state, and that the data carrier or document carrier (100) is coupled to the base station or central station essentially only in the first position (A) or essentially

Abstract: In a method and a device for the communication of microelectronically integrated data carriers, which contain contactless communications devices, at least two data carriers are brought into the reciprocal range of their contactless communications devices, at least one component (field generator) generates an alternating electromagnetic field, by means of which the data carriers are supplied with sufficient energy for the internal processing and communications operations, and data can be transmitted directly from at least one of the data carriers to at least one other data carrier.

Abstract: Portable data carriers are known for different applications, for example as so-called smart cards for bank transactions or for access control or for combined applications. For the various applications different subdivisions of the write/read memory in the data carrier are required so that given zones cannot be read and other zones can only be read and not be written. This subdivision is customarily implemented during the manufacture of the card or the chip. In order to obtain a chip which can be flexibly adapted to various applications, in accordance with the invention the memory in the data carrier is subdivided into a number of blocks which are inhibited from reading or writing by read inhibit and write inhibit information stored in different locations in one or two blocks of the memory. The writing in non-inhibited blocks can additionally be made dependent on a previous transmission of a correct password, the password also being stored in one of the blocks in the memory of the data carrier.