Em Microelectronic-marin Sa

Skidata Ag

Juergen Riedel

Goran Stojanovic

Fabien Maupas

Paul Muller

Charles Egli

Jan Bicak

Jose Luis Geijo Lilma

Martin Schwander

A method provides a tamper loop status of a radio-frequency transponder to a reader. The transponder communicates with the reader at a first frequency according to a first communication protocol. The transponder includes a first non-volatile memory for storing a first set of data of the first communication protocol. The first memory includes a user memory having two portions and each portion includes a data item specific to a status of the tamper loop. The method is performed by the transponder after receiving a request according to the first protocol to read the user memory and includes generating a logical view of the user memory, the logical view including only one of the two portions that is selected according to a value of a binary parameter representative of a status of the tamper loop. The method also includes providing the logical view to the reader via the first protocol.

Method for providing a reader with a tamper loop status of a radio-frequency transponder

A customer medium () for detecting the utilization of services is proposed, comprising a first and a second antenna () for long-range data communication, a third antenna (), an integrated circuit () comprising at least one crypto-engine, one microprocessor () connected with the integrated circuit () or integrated into the integrated circuit (), an operational amplifier () and an RF transceiver () connected to the second antenna (), where the third antenna () is connected to an NFC-module in the integrated circuit () and is used for the short-range data communication in an active mode of the customer medium (), where the first antenna () is used as a wake-up antenna for receiving an amplitude-modulated wake-up signal if the customer medium is in a 'sleep' mode, where the signal received by the wake-up antenna () is demodulated and amplified by the operational amplifier () serving as the wake-up detection module and is evaluated by the microprocessor () partially activated in the 'sleep' mode, where the microprocessor () is completely activated in the event of a valid wake-up signal, by which the customer medium () enters the active mode and where the operational amplifier () is the only component of the customer medium () that is fully active in &#x201c;sleep&#x201d;-mode.

Customer medium to record the utilization of services

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La Neuveville, Switzerland

Juergen Riedel