An RFID system is provided, which includes one or more radio frequency antennas and a generally column-shaped structure. The RF signal has a bandwidth centered at a first frequency. The decoder may be operable to select a register cell within a register file, and the control circuit may be operable to controllably activate the read and write paths through the selected register cell, allowing data read to be inverted and re-written back into the selected register cell. The search results are then displayed in two levels of detail with a first portion of the search results displayed in a first format and a second portion displayed in a second format. The method does not rely on additional messages transmitted from the playback devices, but rather on server side monitoring of the transmission of the media program. The disclosure also relates to a dyeing or lightening process using it.