3 ms·

How would this work? Ad-viewing is a client-side function.

• danielrhodes 10y ago
  The device where the impression is served would do a little work, proving that the ad was indeed viewed and thus preventing fraud.
  • ReverseCold 10y ago
    Is that even possible to prove?
    • Rhapso 10y ago
      Yes, but only if the viewer proceeds to buy the advertised item.