Art's nice! UI's nice! I guess the little guys are the numerous people you're approving.
The gameplay a bit repetitive though, or if it's not repetitive then it might be a tad too slow paced. Might also be a wee bit hard to see the ID number...
(My dumba** also got confused at first and started searching up the characters names instead of the ID number and deined people because I though invalid == denied entry. "My JoB iS sO eAsY!" ROFL)