police can definitely detain you if you refuse to ID yourself and they suspect you of a crimeWhat are the rights of someone in the case of a police officer just coming up to you and asking for ID/searching you? Just genuinely curious (and making sure the perp doesn't have something to argue in court that gets him off). Did they go up to him and say we suspect you were in a crime, what is your name, let us see your ID? How did they know it was fake so quickly? go to the patrol vehicle and run it/call it in?