If you are using it in Hawaii, I have never had any report that proof was needed by the renter. If they ever ask, which I doubt they will, tell them that you are a contractor of the company. This Is not Hertz emp CDP. Usually the only PC’s that will work with this CDP are ones that I post. We did have a CSR in Vegas ask once for proof but they just told them they were a contractor and they didn’t ask for any further proof. Have a good trip!