judgecorp writes "French scientists have found a way to make RFID tags cheaper by printing them on paper. [Abstract] This could allow wider tagging, and combine with technologies such as printed memory." These printed RFID tags use aluminum, "a lot less expensive than copper or silver, which are used in some types of RFID tag. This is good news for inventory users operating millions of RFID tags in their systems."
We will have solar energy as soon as the utility companies solve one technical
problem -- how to run a sunbeam through a meter.