Did not try yet.
did you register the WatchOS app ?
Sending Remote Notifications Directly to Apple Watch
With watchOS 6 and later, you can send remote notifications directly to Apple Watch. Before sending a notification, you must register your watchOS app, as described in Registering Your App with APNs. Registering your app creates a unique device token for the watch. Use that token to send notifications directly to the watch.
The recommended notification strategy depends on your watchOS app, as shown in the table below.
Type of app
Apple Watch-only app
Always send remote notifications to Apple Watch.
Independent watchOS app with an iOS app
Because the app may not be installed on both devices, you should always send the notification to both iPhone and Apple Watch. The system ensures that the user only receives one notification at the best destination.
Dependent watchOS app with an iOS app
You can either send the notification just to iPhone, or send it to both devices. In either case, the system ensures that the user only receives one notification at the best destination.
For more information on watchOS app types, see Creating Independent watchOS Apps.
Did you watch WWDC2019 / 208 ?
Here its transcript
Thanks for the reply!!
I've watched the WWDC 19 video. It just glosses over permissions entirely without any details, except to say that a mechanism for Health is added in watchOS 6. Notifications also has an explicit permission system (I have not looked nn detail at it), but I am only trying to use CoreMotion which in iOS 5 needed permission on the paired phone AND inside the Watch app on the paired phone. I can not find an API to request permission on a standalone watch in watchOS 6. I have a switch statement on the result of
let auth = CMAltimeter.authorizationStatus()
What should I execute in the case .notDetermined ?