I'm enrolled in Google's Advanced Protection program, and it requires me to carry a physical U2F token when signing in through a new device. I've also started using this as my only second-factor authentication method.
My Feitian MultiPass U2F key device is BLE and can authenticate via Bluetooth. I had no problems pairing it with my phone, but when I tried pairing it with my MacBook, I couldn't even see it listed in the list of new devices.
At the same time, my MacBook can see my phone and had no trouble pairing with my headphones. I can use my U2F token with my phone just fine.
I also tried using it via Bluetooth with my wife's Macbook, and that didn't work either. The same problem, it didn't even show up.
- MacBook Pro (Retina, 15-inch, Mid 2014) running 10.13.5 High Sierra
- MacBook Pro (2016 with Touchbar) running 10.13.5 High Sierra