Those without printers can grab a free PayNearMe card at one of 7-Eleven's 6, 000 locations and use the card's bar code in lieu of a printed sheet.

FORBES: Entrepreneurs

Instead, the user relies on reflected light, as he would if he were reading a sheet of printed paper.

ECONOMIST: Electronic screens as thin as paper are coming soon

Now each layer of plastic is as thin as a sheet of copy paper, resulting in smooth printed prototypes.

ENGADGET: MakerBot unveils Replicator 2, 2X and launches retail store, we go eyes-on