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I don't think you could hash the registration plates. Users need to see the vehicles that are associated with their account, not least to select the car that th

I don't think you could hash the registration plates. Users need to see the vehicles that are associated with their account, not least to select the car that the parking session is to be associated with. Although an app could maintain an internal database, the service also has a web interface and the UX that would result from only storing hashed VRNs would be pretty awful.

KingMachiavelli 6y ago
You could just name the vehicle with a nickname and also have the color, make, and model. I figure most people don't even know their license plate number from memory. The app could let you "lookup" an existing entry from the license plate since it would then just be checking if the entered plate value matches one of the existing hash values. I guess the part that would be weird is if your license plate # changed but you kept the same vehicle. e.g kid driver their 'parents' car but one year registers it under their own name.