well, they say it's the next big thing. i saw yesterday some painted electronics, stretchable and washable. printed batteries, as i was told but have not seen yet with my own eyes, are in the lab for more than five years already | ie an israeli company, 2004. on the other side, electronic paper isn't that successful as expected, but printed and flexible rfid chips are out there and functioning. even with or without antenna and batteries. i guess in the future, if you talk about publishing, someone has to consider also electronics.