Sign in with a code
Ask your parent to open the sign-in code on their phone (Family page), then scan it with this phone.
Open the sign-in code on your parent’s phone, then scan it with your own phone.
Point the camera at the code on your parent’s phone.
Your parent can show the code from their Family page → Sign in on another device.
Open your camera and point it at the code on your parent’s phone. When a link appears, tap it, then tap Sign in on this device.