AirDrop is an ad-hoc service that enables users to exchange files between iOS and macOS devices
AirDrop is an ad-hoc service in Apple Inc.'s macOS and iOS operating systems.
Introduced in Mac OS X Lion (OS X 10.7) and iOS 7 that enables users to transfer files to another supported Mac computer and iOS mobile device without using email or a mass storage device. OS X (under OS X Yosemite) and iOS (under iOS 8) use different AirDrop protocols and are not interoperable. AirDrop in macOS operates over Wi-Fi, whereas the iOS implementation utilizes both Wi-Fi and Bluetooth.
Once OS X 10.10 Yosemite and iOS 8 are released however, users will be able to AirDrop between their computer and mobile device.