I already open DSING 芝麻街 accounts for my kids.
To open an account they need a bill which show current your living address and an "original" copy of the baby's birth certificate. Also if you have a passport photo of your baby; they can make an instant teller card with that photo on for your baby. I will make for my babies when they have taken the photos!
The passbook pages is filled with 芝麻街 cartoons and I like very much. Also when I open the account there is a welcome gift - 芝麻街背袋 to be picked up in March ! Not sure if the promotion still on.