Enable the use of one-time passcodes (OTPs) on your Apple Watch.
If you have installed the PingID mobile app on your device, on most models of the Apple Watch, thePingID mobile app is installed on the watch automatically. You should receiving notifications to your watch fromPingID and can also open the PingID mobile app on your watch to receive a one-time passcode (OTP). If the Apple Watch app is disabled, you will not be able to access an OTP from your watch.
Note:
Your Apple Watch only receives notifications when your mobile device is locked and the mobile device screen is in sleep mode.