What is geofencing advertising? It shows your ad to people inside an area you draw on a map: a neighborhood, a store, a venue, or a competitor's block. It is one of the most precise tools in local advertising, and it pairs with the screens people pass and the TV they watch at home.
How a geofence works
A geofence is a digital perimeter around a physical area, a few blocks, a building, a venue, a ZIP code. When a phone enters (or has recently been inside) that boundary, it becomes eligible to see your ads. The boundary can be:
- A radius around your storefront
- A specific venue or building (a stadium, a mall, an office park)
- A neighborhood or ZIP you want to own
- A set of competitor locations (more on that below)
You're no longer targeting a vague "nearby", you're targeting an exact area you choose.
What you can do with it
Geofencing unlocks a few high-value plays:
- Own your trade area. Reach people within realistic visiting distance of your business.
- Target a moment. Advertise to attendees of an event, conference, or game while they're there.
- Conquer competitors. Draw a fence around competitor locations to reach their customers with a reason to choose you. (See competitor conquesting.)
- Retarget visitors. Reach people who entered your location later, with a follow-up offer.
Geofencing and screens together
On its own, geofencing usually means ads on phones. Its real power shows when you combine it with the screens around the same boundary:
- Street-level and in-venue DOOH in the area people physically pass (types of DOOH)
- Connected TV to the same households at home (how CTV targeting works)
- Geofenced mobile to catch them on their phones
Now a customer sees you on the sidewalk, again on the TV that night, and once more on their phone. That repetition is what turns awareness into a visit. The sidewalk layer is Glo OOH. The TV spot is Glo commercials. Together they are a cross-screen campaign anchored on one boundary.
Doing it well
A few principles keep geofencing effective and respectful:
- Draw a realistic boundary. Too big wastes budget; too small starves reach. Match it to where customers actually come from.
- Give a reason tied to place. "Two blocks away, today only" beats a generic ad.
- Respect privacy. Good geo advertising uses anonymized, aggregated, consent-based location data, not personal tracking. (See privacy & geo advertising.)
- Measure with a QR or short link so you can see what the fence delivered.
The simple version
You shouldn't need a specialist to draw the area. With Glo ads, you set a radius, a ZIP, or a city once, and one video runs on the screens and connected TV inside it, from $17/day. To plan the area, start with the hyperlocal advertising guide or local advertising ideas for small business.