Abstract: A method for determining a distance between two spatial points, thus between a first point and a second point, includes recording a first picture from a first viewing point, wherein the first picture includes a reference object and the first point, recording a second picture for a second viewing point, wherein the second picture includes the reference object and the second point and wherein the second viewing point is different than the first viewing point and finally determining the distance between the first point and the second point from picture data of the first picture and picture data of the second picture using a known dimension of the reference object. Thereby, the first point and/or the second point can be arranged outside a plane encompassing the reference object.

Abstract: A system is provided with a portable device (31) for the transmission of signals to a second device, wherein the portable device (31) is wearable on the body of a user. The portable device (31) includes at least two electrodes (3, 4) and transmitter electronics (7) for applying an electrical signal between the electrodes, in such a way that the signal between the electrodes (3, 4) is able to be coupled into the body of the user and detected by at least one electrode of the second device. The transmitter electronics are an application specific integrated circuit and thus include both means for the production of electrical signals that are dependent upon specified data, as well as means for applying the electrical signal between the electrodes. The means for generating electrical signals that are dependent upon specified data are typically digital circuits for the encoding of specified data that are to be transmitted and for the modulation of the data that are so encoded.

Abstract: An identification system includes at least one user medium, which is equipped to store a derived key and authenticate itself using the same with respect to a write and/or read device. Furthermore, at least one key dispensing medium is present, which comprises a monolithic first integrated circuit having storage means and processor means, wherein the first integrated circuit is equipped to store a source key and derive therefrom the derived key and to pass it on for storage in the user medium, wherein the user medium is enabled neither directly nor by way of aids to read the source key from the key dispensing medium and/or the user medium is not enabled to calculate a derived key.

Abstract: In one embodiment of the invention, the access control system comprises a door with an integrated mechatronic closing mechanism which is equipped with a receiver device. The receiver device is designed to receive and evaluate capacitive-resistive signals that are emitted by a transmitter and are transmitted via a user's body. The closing mechanism opens or does open the door in accordance with a result of said evaluation. In said one embodiment of the invention, the closing mechanism is battery-operated and has no permanent electric connection to an object that is not located on or in the door.

Abstract: An identification system includes at least one user medium, which is equipped to store a derived key and authenticate itself using the same with respect to a write and/or read device. Furthermore, at least one key dispensing medium is present, which comprises a monolithic first integrated circuit having storage means and processor means, wherein the first integrated circuit is equipped to store a source key and derive therefrom the derived key and to pass it on for storage in the user medium, wherein the user medium is enabled neither directly nor by way of aids to read the source key from the key dispensing medium and/or the user medium is not enabled to calculate a derived key.

Abstract: A system is provided with a portable device for the transmission of a signal to a second device, wherein the portable device is wearable on the body of a user. The portable device includes at least two electrodes and transmitter electronics for the generation of an electrical signal between the electrodes, such that the signal is able to be coupled by the electrodes into the body of the user and detected by at least one electrode of the second device. A portable device is distinguished in that between the electrodes are arranged component parts of the transmitter electronics and/or of an application distinct from the transmitter electronics, and/or an air gap is present.

Abstract: In one embodiment of the invention, the access control system comprises a door with an integrated mechatronic closing mechanism which is equipped with a receiver device. The receiver device is designed to receive and evaluate capacitive-resistive signals that are emitted by a transmitter and are transmitted via a user's body. The closing mechanism opens or does open the door in accordance with a result of said evaluation. In said one embodiment of the invention, the closing mechanism is battery-operated and has no permanent electric connection to an object that is not located on or in the door.

Abstract: The invention relates to a system with a portable device for the transmission of a signal to a second device, wherein the portable device is wearable on the body of a user. The portable device includes at least two electrodes and transmitter electronics for the generation of an electrical signal between the electrodes, such that the signal is able to be coupled by the electrodes into the body of the user and detected by at least one electrode of the second device. A portable device or also a second device (receiver) is distinguished in that at least one of the electrodes is at least partially transparent.

Abstract: A system is provided with a portable device (31) for the transmission of signals to a second device, wherein the portable device (31) is wearable on the body of a user. The portable device (31) includes at least two electrodes (3, 4) and transmitter electronics (7) for applying an electrical signal between the electrodes, in such a way that the signal between the electrodes (3, 4) is able to be coupled into the body of the user and detected by at least one electrode of the second device. The transmitter electronics are an application specific integrated circuit and thus include both means for the production of electrical signals that are dependent upon specified data, as well as means for applying the electrical signal between the electrodes. The means for generating electrical signals that are dependent upon specified data are typically digital circuits for the encoding of specified data that are to be transmitted and for the modulation of the data that are so encoded.

Abstract: Method for controlling the locking of an electronic lock (5), including the following steps: a user (4) is identified vis-à-vis the electronic lock, the electronic lock (5) displays a question, the user transmits the question to a central station (1), the central station computes the answer to the question and transmits this answer to the user, the user enters the answer in the lock, the lock verifies whether the response is correct and decides according to this answer whether to unlock the door a receipt code is displayed by the lock (5) and transmitted by the user to the central station (1) with the aid of the mobile equipment (3).

Abstract: The invention relates to a system for information transmission between a write- and/or read installation and several portable devices. According to the invention, the information transmission between a portable device and the write- and/or read installation is effected via two channels. On the one hand a first information transmission takes place capacitively and preferably with the human body as a transmission medium. On the other hand, the information transmission procedure also includes a second or conventional “contactless” transmission, i.e. an inductive transmission or a transmission via electromagnetic waves, for example in the radio frequency-, microwave- or infrared range.

Abstract: The invention relates to the information transmission between a data-transmitting apparatus and a read- and/or write module, in particular for the use of access control. According to the invention, data to be transmitted is represented as a digital signal by the data-transmitting apparatus, and this signal is converted into an ultra-broadband signal by way of the spread spectrum method, and capacitively and/or resistively transferred via the body of the user to the write- and/or read module.