Google Wallet is Google's digital wallet that can store various debit cards, credit cards, prepaid cards, membership cards and public transport tickets. It can also be used to make payments. Most recently, Google Wallet will be able to be used by children.
Parents who use Google Family Link can later give children access to Google Wallet payments. These kids should be wearing a watch like the Fitbit Ace LTE. Then each payment will have additional confirmation, each payment method can be controlled by parents including preventing access and all transaction history can also be monitored.
Fitbit Ace LTE is a Wear OS smartwatch for kids. The watch is only sold in countries like the United States, so Google Wallet support via Family Link for these kids will also be limited starting in 2025. It's not certain if Google will roll out this feature to users around the world using other Wear OS watches.