Printers for wallet-size photos are among the most portable printers today, and this Kodak model serves as a prime example of why. One big advantage it has over printers for larger photos is that keeping the photo size to 2 by 3 inches means the chassis can be trimmed down. The Step Instant measures all of 1 by 3 by 5 inches (HWD) and weighs just under a pound. As with much of its competition, it's designed as a phone and tablet accessory, offering Bluetooth and NFC as the only connection options, printing strictly from iOS and Android phones and tablets. The printer uses Zink technology, which creates images by heating dye crystals embedded in the paper, without the ink cartridge or dye ribbon some other portables use (another slimming factor). Cost per print is reasonable, at around 50 cents, and the print speed is right-on among Zink printers we've tested, at around a minute a snap. The print quality is also on par among Zink-based printers, which is to say that the prints make for nice stickers and casual snapshots to share, but output from dye sub and inkjet printers tends to look a tad sharper.