After switching to 100% Linux a couple of years ago there was basically only one thing I missed about macOS and that was what Apple calls "Continuity". It's where you get texts, notifications, clipboard sync, file transfer (to/from) the iPhone from the Mac desktop. Especially that thing where OTP codes via text autofilled into the browser form I was waiting on.

It took about 4 months of work:

- reverse-engineering Apple/iOS Bluetooth behavior

- MAP / OBEX

- Bluetooth LE + Wi-Fi working together

- iMessage through the iPhone's own cellular/iMessage stack

- iOS app, Linux daemon, GTK app, Thunderbird/Firefox extension

- no Mac involved

But it is now something I'd love to show people. Contributions/bugs/feedback welcome!