What kind of software do event instant printers use?

[Optodexine]

I need instant printing services for my clients like the ones that you see at theme parks. The kind that is super easy to use and can allow operators to show the client what photo they are going to print via a seperate screen.

Found this link but software looks super outdated. Anyone has any ideas?

http://noveltyphotosoftware.com/npsbusiness.html