Loki assume you mean when you are driving: You need to ID yolruesf, either verbally or with documents as long as they don't have reason to believe the identification is false. Then you need proof of a licence. If you have one, you'll be in the computer, but you need to carry it and surrender it upon request. Refuse to id will lead to arrest. Refuse to surrender licence will lead to a fine. Incorporate an un-plated car and no insurance, and you're walking and vehicle towed