Isn't it a problem?
The retail media industry has poured resources into attribution while neglecting the more basic question of whether ads actually appeared on screens. Most in-store networks rely on a trust-based model using operator-reported logs. OOH verification is structurally harder than digital because one screen observation cannot generalize across thousands of independent devices.
isn't it a problem?
The retail media industry has poured resources into attribution — linking ad exposure to sales outcomes — while neglecting the more fundamental question of whether ads actually appeared on screens. This matters because attribution models are only as reliable as the delivery data that feeds them. An impression that cannot be verified is not an impression at all. Most in-store retail networks operate on a trust-based model: advertisers buy placements across thousands of screens they will never personally inspect, and rely entirely on operator-reported logs. If these logs reflect what the player intended rather than what the screen actually showed, the entire measurement chain rests on an unverified assumption. As DailyDOOH argues, verification infrastructure is invisible when it works and only surfaces as reduced revenue when impressions go unbilled — which makes it easy to defer.
Why is OOH verification structurally harder than digital?
Digital advertising has a built-in verification shortcut: open the browser, load the ad, and confirm it was shown. The single observation generalizes — if the creative was shown to you, the delivery pipeline works. Out-of-home breaks that logic entirely. Standing in front of one screen confirms one playback event across potentially thousands of devices, each with independent hardware, connectivity, and environmental conditions. [IAB and IAB Eur