The registration issued for any vehicle must be in the driver’s vehicle or on an electronic device in the possession of the driver, this also includes registration for any towed units requiring registration in this state. This means you can have a photo of the registration on your phone, as long as the phone is with you while you're operating the vehicle.
Any person violating this section is assessed a fee of twenty dollars. A person cited for violation of this section may not be found to have committed the violation if the person, within fourteen days after being cited produces and displays to the office of the prosecutor where the matter is pending, a registration valid at the time the person was cited. A peace officer or highway patrol officer, upon citing a person for violating this section, shall inform the person that a violation will be considered as not having occurred if the person produces and displays a valid registration in the manner provided in this section.