I've been trying to get AirDrop to work on Linux. I did make it work... with WiFi disabled. AirDrop needs to use WiFi on a different channel. Apple does it by flickering between channels, but the network chip needs firmware support to do this. I could patch the WiFi chip's firmware on my laptop, except it's closed source. We could reverse-engineer it, except it's signed by the vendor and it blocks unsigned code. These companies are truly evil.