HP's Sprocket Select finds a happy medium among the company's Zink (zero-ink) smartphone photo printers, making larger prints than the base Sprocket's tiny snapshots but coming in under the Sprocket Studio's 4-by-6-inch scrapbook photos. The Select's 2.3-by-3.4-inch pics have a peel-off sticky backing and cost 65 cents apiece if you buy HP's two-pack of 10 sheets. Print quality is the best we've seen from a Zink printer, if still short of inkjet and dye-sublimation devices, but then the Sprocket Select is only 0.7 by 3.5 by 5.7 inches and weighs just six ounces.