One of the problems with RFID technology is expense and the difficulty in doing it. but here is a new method that shows promise, and is actually being used for circuit boards and phones. I can see how you could embed the plastic in a product made with other materials, just to have the RFID info present. We will reach our goal of tracking everything.
Laser Structuring Method Embeds RFID Tag Antennas in Goods – RFID Journal.