From the outset, teach your child to keep their password private to themselves only.
A great little catchphrase to use with pre-teen children:
“Treat your Password like your Toothbrush – New Share and Change it regularly.”
Every Password should have the following:
Think of your child as a “Digital Adult”. They explore far more than we adults. They constantly register on new sites, apps, games.
The longer they keep the same Password, the better chance that Password has of being compromised.