The AirDrop file transfer protocol, introduced with Mac OS X Lion and iOS 7, is a fast and convenient way to transfer files between Apple devices. The current version of the service is interoperable between iOS and macOS, but requires both Bluetooth and Wi-Fi to be active in order to work. It also requires Mac OS X Yosemite or newer and a hardware model from 2012 or later.
However, the version of AirDrop that shipped as standard with OS X between 10.7 (Lion) and 10.9 (Mavericks), whilst unable to send files to iOS devices, works without Bluetooth and on Mac models going back as far as 2008. Luckily, alongside the newer version, this legacy mode is still included on all Mac models to date, and as this guide will show, can be modified to have an even broader functionality.