Illuminated signs; digital signs; electric signs; mechanical signs; recorded computer software for reading radio-frequency indentification (RFID) chips; radio-frequency indentification (RFID) readers; radio-frequency identification (RFID) tags; labels with integrated radio-frequency indentification (RFID) chips; data carriers containing microcircuit; electronic data carriers featuring radio-frequency indentification (RFID) chips; optical data media carriers for carrying radio-frequency indent...