The AirPrint feature in iOS let’s you print from your iPhone or iPad to your home printer – directly if you have one of the handful of AirPrint-capable printers on the market or using a print server device or utility on your Mac like Printopia or FingerPrint.
AirPrint addresses the basic need to print, but it isn’t really a mobile solution. What if you’re on a business trip or vacation and need to print? What if you’re headed to a meeting and forgot to print out brochures ahead of time?