Q: MacOS Sierra can't connect to AppleWatch

Hi Dr_John,

I understand you are trying to set up your Apple Watch to unlock your iMac, but are running into some difficulties with them connecting. I know that it's nice to have a quick and secure way to unlock your devices, so I'm happy to help.

When setting up a continuity feature like this, it's important to ensure that everything is configured correctly. Check out this article to make sure you have all of the right settings:
Automatically unlock your Mac with your Apple Watch - Apple Support

Thanks for using the Apple Support Communities. Cheers!