We don't exactly got the resources for anything too telling, y'know. Hold on...

[He tucks the leaflets under his arm and then shoves the plate into Eren's hand-] Hold this. [-then removes his tablet from inside of his jacket and starts tapping away, scrolling and navigating, yadda yadda.

Eventually he brings up the police force's page and holds the screen in front of Eren, where Gin's name is listed.]

See that? Gin Ichimaru, that's me. It's a little messy at the minute but we do our best to look as official an' held together as we can.