If your Body+ doesn’t recognize you when you weigh in, your weight measurements will be listed as unknown measurements.

1. Open the Withings App.
2. Tap Devices.
   Note: sometimes, unknown measurements are accessible from the Home tab of Withings App.
   
3. Tap Unknown measurements underneath the scale.
   
   
4. Tap on the measurement you want to assign.
   
5. Tap the user you want to assign it to.