Hi. Certainly attaching license plates to doors is very important for many reasons. Personally, I find it best to use a strong adhesive or screws. However, I recently came across one very cool online store bsign-store.com numbers for doors that makes customized license. They offer unique designs and quality materials that can add an extra touch to your doors while ensuring their longevity. I think exploring these options can be a game changer in terms of both aesthetics and functionality. And you can attach them any way you want, which will be done for you in the process of making these signs