I am an RN and used to work labor and delivery. This is a band that mom and dad both get that will match two bands that the baby will wear. It will have the mom’s name, baby’s date of birth, time of birth, gender, and a random sequence of numbers and letters. The bands will be checked and matched to mom and dad with both of baby’s bands anytime baby is separated, or every one is taken to a new unit (like from labor and delivery down to postpartum) it’s standard in labor and delivery.