on demand printing from your digital camera fun 2x3" pocket size great for parties or group events make your own postcards while traveling I brought this to art camp with me, and while it was slow to print, it was the hit of the party! Friends can connect a DSLR or certain mobile phones (not iphones as far as i can tell) and print a file on to super cute 2x3" photo paper. The quality is honestly low, but I love toy photography and the souvenir element it has.