Using gift cards to buy perks in Gorilla Tag

I wanted to  buy shiny rocks for my child, but did  not want to leave my credit card information on his account permanently. I also wanted a private, secure way to add the credit card without typing it in while wearing the headset, and having other players watch. I have a parent oculus account and a child account that is linked to my parent account. I can log into both on the PC without having to use the Quest. I have the child's login information. I logged into the child's account on my PC and entered my credit card information. Then I physically put on his Quest headset, walked in virtual to the ATM inside the Gorilla Tag game, and made the Shiny Rocks purchase using the stored credit card information. (This way I did not have to enter the full credit card number on the Quest virtual ATM, in front of other players.) I removed the headset, went back to the PC, logged into the  child's account, and removed the credit card information, as I do not want him to have the ability to make purchases without my knowledge.