Question

A ride-sharing app collects precise GPS coordinates continuously so drivers and riders can be matched. The privacy engineer is designing a feature that lets users view nearby available drivers on a map. Product wants to display driver locations to riders in near real time. To apply data minimization and privacy by design at the presentation layer, which approach should the engineer implement for the rider-facing map?

Accepted Answer

Reduce the granularity of driver coordinates (e.g., snap to a coarse grid or truncate decimal places) before sending them to the rider's device

Answer

Send exact driver coordinates to the rider's device but encrypt the payload with TLS so it cannot be intercepted in transit

Answer

Send exact coordinates to the rider and rely on the app's terms of service prohibiting misuse of location data

Answer

Cache exact driver coordinates on the rider's device and delete them after the ride is completed