4 ms·

It looks like it is done on the device based on the framework header : https://github.com/JaviSoto/iOS10-Runtime-Headers/tree/master/PrivateFrameworks/Different

• yousry 10y ago
  Interesting. I thought that with DP the user data is anonymized by a random function with the value range based on the complete sample set. I also expect that the data is encrypted before transmission and I expect some kind of unique signature which is somehow stored on the device. The transmission itself is certainty logged on client and server side. If I understand this framework correct the epsilon range for the randomization can be selected by hand before the transmission and also the number of collected parameters is not limited. Why is this called "differential privacy"?
  • nicky0 10y ago
    Perhaps named because the system is based on differences between the true value and the reported value .... and then summing the aggregate data removes these 'differences'.
    • yousry 10y ago
      If a data collector can choose the epsilon range and the linked parameters by oneself, s/he could choose small (irrelevant) or too large (expandable) ranges and could try to cross reference the result via data-mining (already collected data).
      • nicky0 10y ago
        True.