Method for detecting at least one object and radio node network

摘要

The method involves transmitting a separate activation sequence in case of desired detection by a transmitter, with a radio signal. The radio signal is received in a receiver circuit i.e. wake-up receiver (2), of radio nodes (1, 5) of an object. The separate activation sequence is tested for compliance by a stored activation sequence. The radio nodes of the object are activated with predetermined characteristic based on the compliance. The activated radio nodes are optically and/or acoustically signalized. The separate activation sequence is stored in the receiver circuit. An independent claim is also included for a radio node network comprising radio nodes.