Those scanners would have to use the account name, because if you purchase a band at the park it just has a bunch of numbers on the back of it. Which is great if you are a stormtrooper but who else wants to be referred to by numbers? If it is the account name, you can go to the profile section and change the name on your account to have a nickname or whatever. So if you went in there and changed it to Darth Vader, the Small World screens would say "Hello Darth Vader" or whatever they say.