We were at Disney World last week and the finger scanning process for my 3 year old granddaughter was a pain every time we went into the parks. I went with my son, his fiancée and my granddaughter, my husband and my other son. Sometimes my husband and I would take her into the parks, sometimes her parents took her into the parks and a few times my other son took her into the parks. Every time we went into the park we had to explain the situation to the cast member and then wait for the iPad person to come and change the fingerprint for us. One of the people with the iPads insisted that she take a picture of my granddaughter to have on file to prove that we were only bringing my granddaughter in and not using it for multiple kids. Another time the person at the fingerprint machine called over a manager. The manager was clearly irritated by the new policy saying "She's a kid. Why are they doing this? She is just a little kid. Let her through."
I was really put off by being told that they needed to take a picture of my granddaughter to prove we were not bringing in multiple kids. The way it was said sounded like the woman was accusing us of trying to sneak multiple kids in.
There was also another time when my husband and I brought my granddaughter in where we were told we had to go to guest relations to show our ID. I showed them my ID and they checked the reservations to make sure I was associated with her hotel room. Luckily I made the reservations for both our room and my son's room. After that the guest relations person got an iPad person to come over and escort us back to the fingerprinted so they could reset the fingerprint again.
We were not given the option for my granddaughter to try scanning her finger. The only option was an adult.