Attribution — the process of crediting advertising exposures for conversions — is the most important and most misunderstood aspect of geofencing measurement. Without accurate attribution, you cannot know whether your geofencing campaign is actually driving results or whether the conversions you are observing would have happened anyway. Understanding the attribution models used in geofencing, and their respective strengths and limitations, is essential for making informed campaign decisions.
The Primary Geofencing Attribution Model: Walk-In Attribution
Walk-in attribution (also called foot traffic attribution or conversion zone attribution) is the primary measurement model for geofencing campaigns. It works by: (1) identifying devices that were exposed to geofencing ads (the 'exposed' group), (2) tracking whether those devices subsequently visited the advertiser's location (the conversion zone), and (3) reporting the number and percentage of ad-exposed devices that visited the location.
Walk-in attribution is powerful because it measures physical behavior — actual store visits — rather than digital proxies like clicks or impressions. However, it has important limitations: it can only measure visits to physical locations (not online conversions), it requires a conversion zone geofence at the advertiser's location, and it does not account for visits that would have happened without the ad (organic visits).
Attribution Windows
The attribution window defines how long after an ad exposure a conversion can be credited to that exposure. Common attribution windows for geofencing include: 1-day (same-day visit), 7-day, 14-day, and 30-day windows. Longer attribution windows capture more conversions but also include more organic visits (people who would have visited regardless of the ad). The appropriate attribution window depends on your industry and purchase cycle: same-day for restaurants and retail, 7–14 days for service businesses, 30 days for high-consideration purchases like automotive and real estate.
Multi-Touch Attribution
Multi-touch attribution distributes conversion credit across multiple advertising exposures in the conversion path. For example, a customer who saw a geofencing ad, then a Facebook ad, then searched on Google before visiting your store — multi-touch attribution would distribute credit across all three touchpoints rather than crediting only the last touch (Google search). Multi-touch attribution provides a more accurate picture of how geofencing contributes to conversions in a multi-channel marketing environment.
Incrementality Testing: The Gold Standard
Incrementality testing measures the true causal impact of geofencing by comparing conversion rates between an exposed group (users who saw the geofencing ads) and a control group (similar users who did not see the ads). The difference in conversion rates between the two groups is the incremental lift attributable to the geofencing campaign. Incrementality testing is the most rigorous attribution methodology because it controls for organic visits and other confounding factors.
Frequently Asked Questions
What is a good walk-in rate for a geofencing campaign? Walk-in rates vary significantly by industry and campaign type. Typical benchmarks: automotive (1.0–2.5%), retail (0.5–1.5%), restaurants (0.8–2.0%), healthcare (0.3–0.8%), fitness (0.5–1.2%). Walk-in rates above these benchmarks indicate strong campaign performance; rates below suggest targeting, creative, or offer optimization is needed.
How do I measure online conversions from geofencing? Online conversions (website visits, form submissions, phone calls) from geofencing are measured through UTM parameters on landing page links in ads, unique phone numbers (call tracking), and pixel-based attribution (a tracking pixel on your website that matches website visitors to geofencing-exposed device IDs).
