The RFID tagging of the least divisible thing in RFID terms such as the packs of drugs kept in the home and individual cans of beverages. In the context of RFID, item level particularly relates to high volume items i.e. taggable in millions to trillions. It is the biggest RFID market of all, potentially, but the percentage of such items that are currently tagged is miniscule. The technical and cost requirements of item level tagging are usually very different from those for other forms of RFID with the need for small tags - because they usually go on small items - that work in systems tolerant of absorbent and reflective material nearby yet cost less than any other type of RFID tag.