<i>"it is unlikely that a non-Apple device has hardware support for adhoc wireless connections between devices. This makes implementation of AirDrop directly on non-Apple devices practically impossible without additional hardware. Instead we’ll implement a proxy..."</i><p>I get what they mean here, but it has been done. It does require a Wi-Fi card with support for monitor mode and frame injection. OWL did it with an Atheros AR9280.<p>Open drop also requires extracting keys from an Apple device if you want Apple interop.<p>See OWL:<p><a href="https://github.com/seemoo-lab/owl" rel="nofollow">https://github.com/seemoo-lab/owl</a><p>And Open drop:<p><a href="https://github.com/seemoo-lab/opendrop" rel="nofollow">https://github.com/seemoo-lab/opendrop</a>