[Gold Ninja Drive]

I'm thinking that the reason the Ultra Access card is a thing, at least in universe, is that the ones who made it remember what happened with the Geed Riser and added some extra security in case this model gets stolen too. Which, I mean... it did. And it looks like one of the villains has a riser AND card, so it wouldn't have worked anyway if that was their intention. But at least they tried.

Though out of universe, it's most likely just so that other ultras/people can use it, sort of like how the faceplates on the Sengoku driver worked. It's just that instead of having it be a separate piece of the riser, they had it use the same scanner as the medals, which is kind of interesting.