This work presents significant increases in complexity in organic RFID transponder chips compared to earlier reports, which bring the tag closer to EPC. We show a transponder chip with a ROM memory capacity of 128b. Furthermore, it contains a WORM memory in addition to the ROM shown in this paper. The data rate is doubled, to 2kb/s and is Manchester encoded. Also a basic anti-collision protocol has been added, whereby the readout of multiple organic RFID tags would be possible.