3 out of 4 credit card companies are no longer requiring signatures starting in April. Visa has not made an announcement on what they are going to do just yet. This might be part of the reason Disney is trialing this since cards are becoming easier/faster to use. Magic band with pin or just pop in credit card and done.
Edit: Just found out Visa will join the party and no longer require a signature.
Edit: Just found out Visa will join the party and no longer require a signature.