Abstract: The present invention relates generally to acquisition of data from RFID devices (132-136), such as sensor data. Prior art systems of active RFID devices have a problem of high average power consumption, and therefore, the energy source of the RFID devices needs to be replaced or charged frequently. The present invention provides a new solution wherein the RFID device has a power saving mode in which the receiver of the RFID device has a decreased ability to receive/detect RF signals. The RFID device may include a timer which is functional during the power saving mode, and the receiver of the RFID device will turn into active mode at a point of time based on the time value of the timer. Signal strength of an RF channel is indicated with a receiver, and transmission of data is dependent on the indication of the signal strength.

Abstract: A device, method and system for forwarding data from a number of RFID devices, wherein data, e.g. ID and/or sensor data, is wirelessly received from the RFID devices (106) via radiofrequency communication and stored by a master device (104) that after receipt of a radio frequency activation signal transmits the data over a WLAN connection towards a remote recipient.