AirDrop is a Wi-Fi ad-hoc service in Apple’s OS X operating system, introduced in version Mac OS X 10.7 Lion. Using AirDrop, users can share files with other supported Mac computers running OS X 10.7 or later without the need of a Wi-Fi network or any configuration and without the need of USB mass-storage devices.
Sources say that the AirDrop functionality is currently integrated into the standard iOS share menu. AirDrop will work between two iOS devices and potentially between an iOS device and a Mac. The feature will make it easier than ever to transfer, for example, a photograph or document from one person’s iPhone to another person’s iPad.
While iCloud synchronization works well for sharing photos and documents between two iOS devices owned by the same person, the AirDrop feature will allow seamless individual file exchanges between iOS devices belonging to different people.