permissions-registration

par facebook

App registration with Meta AI, camera permission flows

npx skills add https://github.com/facebook/meta-wearables-dat-ios --skill permissions-registration

Télécharger ZIP GitHub

509

Permissions & Registration (iOS)

The DAT SDK separates two concepts:

Registration — Your app registers with Meta AI to become a permitted integration
Device permissions — After registration, request specific device permissions (e.g., camera)

All permission grants occur through the Meta AI companion app.

Registration flow

Start registration

func startRegistration() async throws {
    try await Wearables.shared.startRegistration()
}

This opens the Meta AI app where the user approves your app. Meta AI then calls back via your URL scheme.

Handle the callback

.onOpenURL { url in
    Task {
        _ = try? await Wearables.shared.handleUrl(url)
    }
}

Observe registration state

Task {
    for await state in Wearables.shared.registrationStateStream() {
        switch state {
        case .registered:
            // App is registered, can request permissions
        case .unavailable:
            // Registration is unavailable
        case .available:
            // Ready to register
        case .registering:
            // Registration in progress
        }
    }
}

Unregister

func startUnregistration() async throws {
    try await Wearables.shared.startUnregistration()
}

Camera permissions

Check permission status

let status = try await Wearables.shared.checkPermissionStatus(.camera)

Request permission

let status = try await Wearables.shared.requestPermission(.camera)

The SDK opens Meta AI for the user to grant access. Users can choose:

Allow once — temporary, single-session grant
Allow always — persistent grant

Multi-device behavior

Users can link multiple glasses to Meta AI. The SDK handles this transparently:

Permission granted on any linked device means your app has access
You don't need to track which device has permissions
If all devices disconnect, permissions become unavailable

Developer Mode vs Production

Mode	Registration behavior
Developer Mode	Registration always allowed (use `MetaAppID` = `0`)
Production	Users must be in proper release channel

For production, get your APPLICATION_ID from the Wearables Developer Center.

Prerequisites

Registration requires an internet connection
Meta AI companion app must be installed
For Developer Mode: enable in Meta AI > Settings > Your glasses > Developer Mode