Location-based advertising: reaching people by where they are
Location-based advertising targets people by where they are rather than who they are. It spans geotargeting, geofencing, proximity marketing and out-of-home. Only out-of-home works without device permissions — and only vehicle-based out-of-home can change its location during a campaign.
Four techniques get filed under location targeting and they differ enormously in range, in what they require from the audience, and in how reliable they are. Sorting them out first saves picking the wrong one.
What are the types of location-based advertising?
| Approach | Range | What it needs | Fails when |
|---|---|---|---|
| Geotargeting | City, region, postcode | An approximate location signal | The area is too broad to mean anything |
| Geofencing | A defined perimeter | Device location and permission | Permissions are denied or signals drift |
| Proximity | Metres | A device signal at close range, often an app | The audience has no app or Bluetooth off |
| Out-of-home | Line of sight | Nothing from the audience | The placement is in the wrong place |
Notice the last row. Three of these four techniques depend on the audience carrying a device that is willing to report where it is. Out-of-home does not ask the audience for anything.
Why is out-of-home the original geofence?
A billboard targets by location perfectly and permanently. Everyone who passes it sees it. There is no opt-in, no permission prompt, no identifier to deprecate, no signal loss indoors. The targeting decision is made once, when you choose the site.
That is also its constraint. The perimeter is drawn at booking and cannot be moved. If the audience shifts, the panel does not.
What changes when the placement can move?
Vehicle-based inventory is the exception, and it is the only part of out-of-home where geography is adjustable after the campaign starts. The unit travels a route, and the route is something you set.
Practically, that turns a few planning problems around:
- Corridors instead of points. If the target area is a route rather than an intersection, fixed panels can only approximate it with several sites.
- Time-shifted geography. The inventory can be in a business district in the morning and elsewhere in the evening. A fixed panel is where it is at every hour.
- Frequency as a dial. Hold a route to concentrate exposure, rotate it to spread across more people.
- Events. Where demand is temporary and there is no panel inventory nearby, a route can be built to it.
The cost of that flexibility is measurement. Because geography is a variable, an audience figure means nothing without the route it assumed — see how impressions are measured.
Does being somewhere mean wanting something?
Usually not, and this is where location budgets go to die. Presence is a weak signal of intent. People pass car dealerships without wanting a car and stand outside gyms while waiting for a bus.
Location works best when the place genuinely implies a state — commuting, travelling, waiting, arriving at a venue — rather than when a perimeter is drawn around a competitor's front door and treated as a purchase signal. Geofencing a rival's car park is the tactic that gets pitched most and disappoints most.
How do you choose between them?
- Does your audience need to be identified, or only reached? If reaching them is enough, out-of-home avoids the entire permission problem.
- Is the target a point or a corridor? Points favour fixed placement; corridors favour routes.
- Does the geography need to change mid-campaign? Only mobile inventory and device-based channels can do that.
- How precise does "here" need to be? Metres means proximity. A neighbourhood means geotargeting.
- What happens when the signal is unavailable? Indoors, in transit, or with permissions denied, device-based targeting degrades quietly rather than visibly.
Where to go next
The out-of-home guide covers the formats and how each is bought. Transit advertising goes deeper on the formats that move.
Frequently asked questions
- What is location-based advertising?
- Advertising targeted by where the audience is rather than who they are. It covers geotargeting by area, geofencing around a defined perimeter, proximity marketing at very short range, and out-of-home placed where a target audience already passes.
- What is the difference between geofencing and geotargeting?
- Geotargeting selects a broad area — a city, a postcode, a radius. Geofencing draws a specific perimeter around a place and triggers on entry or exit. Geofencing is tighter and event-driven; geotargeting is a filter on who is eligible to see an ad.
- What is proximity marketing?
- Reaching people within very short range of a specific point, typically metres rather than kilometres, often using a device signal. It is the shortest-range form of location targeting and the most dependent on the audience carrying a phone with the right permissions.
- Is out-of-home a form of location-based advertising?
- It is the oldest form. A billboard is a permanent geofence: everyone who passes the site sees it, with no device, app or permission required. The targeting is done by choosing the location rather than by filtering an audience.
- Do you need mobile location data for location-based advertising?
- For app and web channels, yes — and that means depending on permissions and platform policy. Out-of-home does not. The placement itself is the targeting, which is why it is unaffected by privacy changes that break device-based approaches.
- Can out-of-home change location during a campaign?
- Fixed sites cannot; the geography is committed at booking. Vehicle-based inventory can, because its geography is a route rather than a coordinate. That is the only part of out-of-home where location is adjustable mid-flight.
- What is the main limitation of location-based advertising?
- Being in a place says little about intent. Presence is a weak proxy for wanting something, and treating a geofence entry as purchase intent is how location budgets get wasted.
Sources
- Out of Home Advertising Revenue Reaches Record $9.46 Billion — Out of Home Advertising Association of America (OAAA), March 17, 2026
- Glossary — reach, frequency and impressions in out-of-home — Geopath, Accessed August 2026
About the author
Melih Koray works in marketing at Firefly, an out-of-home media operator running digital screens on vehicles across U.S. markets. He reviews every article on this site for factual accuracy and source attribution.