3 ms·

Offset as function of user and location?

• jessaustin 6y ago
  Where is this function stored?
  • ganafagol 6y ago
    As a random secret in the reporting device. The secret can then be used with a cryptographic hash to produce a deterministic but unpredictable offset, based on the current location. Something like: reported_position = true_position + hash(secret + true_position)
    • ganafagol 6y ago
      Hm that will essentially behave like random noise though, assuming that the position is sufficiently high resolution. So you'll need to round it in any case, and once you do that heavily enough, there is no need for this crypto magic.