Method of reading data from a document, reader, document and electronic system

摘要

A method of reading data (120) from a document (104) by means of a reader (102), wherein the reader forms the primary side of a transmitter (110), the document comprising an electronic memory (118) for storing the data, Processor means (114) for reading the data from the memory and at least one controllable by the processor means electrical loads (128, 130, 132), wherein the document by the secondary side of the transformer is formed, and wherein the processor means and the at least one consumer for Power supply connected to the secondary side, and wherein the document includes one or more of the following consumers: display device, fingerprint sensor, iris scan sensor, touch panel, touchpad, temperature sensor, motion sensor, camera, with the following steps: - Applying a primary-side voltage (U) to the primary side for coupling energy into the secondary side, - control of the at least t a consumer by the processor means, whereby a time-varying secondary load is formed, through which the primary side undergoes a modulation, - evaluation of the modulation of the primary side by the reader to perform a read access to read the data depending on a result of the evaluation.