Apple is transitioning its current mobile checkout system away from the Pocket PC to the iPod touch, several sources claim. A distinguishing trait of Apple Stores is the ability of clerks to handle payments away from a fixed station; the company has, however, been using Pocket PCs for this purpose since 2005, in spite of launching the iPhone and iPod touch in 2007. The move to the Touch is said to be coming in time for the 2009 holiday shopping season, and already in effect at a Valley Fair Mall location in Santa Clara, California, possibly as a trial.