The Complete Geofencing Terminology Guide

A precision targeting method that draws a virtual boundary around a specific physical address — such as a single home, business, or building — rather than a broad radius. Advertisers can serve ads to devices detected at that exact address, making it ideal for account-based marketing and hyper-local campaigns.

The process of connecting an ad exposure to a real-world outcome, such as a store visit, phone call, or online conversion. In geofencing, attribution typically measures foot traffic lift — how many people who saw an ad later visited the targeted location — providing advertisers with a measurable ROI signal.

A controlled experiment in which two versions of an ad creative, landing page, or geofence boundary are served simultaneously to comparable audience segments to determine which performs better. In geofencing campaigns, A/B tests are commonly used to compare different fence sizes, creative formats, or call-to-action copy. Statistical significance — typically requiring at least 95% confidence — must be reached before declaring a winner and scaling the higher-performing variant.

A defined group of users who share common characteristics — such as having visited a specific location, browsed a particular category of content, or matched a demographic profile — that can be targeted with a coordinated ad campaign. In geofencing, an audience segment is built from the device IDs captured within a geofence. That segment is then activated across programmatic inventory, social platforms, and CTV to deliver ads to the same audience across every screen. Audience segments can be layered with behavioral, demographic, and contextual data to improve targeting precision.

A method of reaching audiences based on their past actions and movement patterns rather than just their current location. Geofencing platforms build behavioral profiles from historical visit data, allowing advertisers to target people who have previously visited a competitor, attended an event, or frequented a specific type of location.

The minimum CPM price a publisher or ad exchange will accept for a given ad impression. In programmatic geofencing, bid floors vary by audience quality, location precision, and inventory type. Premium inventory — such as high-traffic urban locations or brand-safe news environments — typically carries higher bid floors. Understanding bid floors helps advertisers set competitive bids that win the most relevant impressions without overpaying.

A defined geographic area — typically the advertiser's own business location — used to measure whether someone who was served an ad later physically visited that location. When a device that received an ad impression is detected inside the conversion zone, it is counted as a verified visit, enabling foot traffic attribution.

The cost an advertiser pays per 1,000 ad impressions served. CPM is the standard pricing model for display and geofencing campaigns. Geofencing CPMs typically range from $5–$15 depending on targeting precision, audience size, and campaign geography.

The ability to reach the same user across multiple devices — smartphone, tablet, laptop, and connected TV — after they have been identified within a geofence. Cross-device targeting extends the reach of a location-based campaign beyond the moment of physical proximity, keeping the brand visible throughout the consumer's digital day.

A targeting method that serves ads based on the content of the webpage or app a user is currently viewing, rather than their behavioral profile or location history. When combined with geofencing, contextual targeting adds a content-relevance layer — for example, serving a car dealership ad to a user inside a competitor's lot who is also reading an auto review article. This combination improves ad relevance and reduces wasted impressions.

Connected TV (CTV) and Over-The-Top (OTT) advertising delivers video ads to audiences watching streaming content on smart TVs, Roku, Fire TV, Apple TV, and similar devices. In geofencing campaigns, CTV/OTT extends reach by targeting the same household that was geofenced on mobile — serving a 15- or 30-second non-skippable video ad on the living room TV. This cross-device approach significantly increases brand recall and campaign frequency.

The percentage of ad impressions that result in a user clicking through to the advertiser's destination URL, calculated as (clicks ÷ impressions) × 100. In geofencing display campaigns, average CTRs typically range from 0.08% to 0.35%, which is meaningfully higher than non-targeted display benchmarks because the audience has been qualified by physical location. CTR should always be evaluated alongside conversion rate and foot traffic attribution, as a high CTR with low conversions may indicate a landing page problem rather than an audience problem.

The process of identifying and linking multiple devices owned or used by the same person or household, enabling advertisers to deliver coordinated ad experiences across all screens. Cross-device matching relies on device graph technology and uses two methods: deterministic matching (exact identity signals like email logins) and probabilistic matching (inferred connections from shared IP, location, and behavioral patterns). In geofencing, cross-device matching is what transforms a single mobile impression into a full-funnel, multi-screen campaign.

The practice of scheduling ad delivery to specific hours of the day or days of the week to align with audience behavior patterns. In geofencing, dayparting is used to serve ads when a target location is most active — for example, running restaurant ads during the lunch hour, or serving competitor conquest ads on weekday mornings when commuters pass rival dealerships. Dayparting reduces wasted impressions and improves overall campaign efficiency.

A software platform that allows advertisers and agencies to purchase digital ad inventory across multiple ad exchanges and supply sources through a single interface. DSPs use real-time bidding (RTB) to evaluate and bid on individual impressions in milliseconds. Geofencing campaigns are executed through DSPs, which apply location data, audience segments, and targeting parameters to determine which impressions to bid on and at what price.

A unique alphanumeric identifier assigned to a mobile device — either an Apple IDFA (Identifier for Advertisers) or a Google GAID (Google Advertising ID) — that allows advertisers to target, track, and attribute ad exposure to specific devices without using personally identifiable information. Geofencing platforms build audience segments by collecting the device IDs of users whose devices are detected inside a defined geographic boundary. Device IDs are the foundational data unit of mobile geofence advertising and enable cross-device targeting when matched to household graphs.

The length of time a device spends inside a geofenced area before being added to a targetable audience segment. Advertisers use minimum dwell time thresholds — typically 5 to 15 minutes — to filter out devices that merely passed through a location versus those that genuinely visited. Setting an appropriate dwell time is critical for audience quality: too short a threshold inflates audience size with low-intent passers-by, while too long a threshold may exclude legitimate visitors.

A database that links multiple devices — smartphones, desktop computers, tablets, and connected TVs — to the same person or household. Device graphs use deterministic matching (shared login credentials, email addresses) and probabilistic matching (shared IP addresses, behavioral patterns, location co-occurrence) to build device clusters. In geofencing, a device graph enables cross-device retargeting: a mobile device ID captured inside a geofence is matched to the user's other devices so ads can follow them across every screen they use.

A cross-device identity resolution method that links devices using exact, verified identity signals — such as a shared email address, phone number, or logged-in account. Deterministic matching produces high-confidence device connections because the link is based on known identity data rather than inference. In geofencing, deterministic matching is used in device graphs to connect a mobile device captured in a geofence to the same user's desktop browser or connected TV with near-certainty. It is more accurate than probabilistic matching but has lower coverage because it requires the user to be logged in across devices.

A measurement methodology that tracks how many people who were served a geofencing ad subsequently visited a physical location. Foot traffic attribution is the primary KPI for geofencing campaigns targeting brick-and-mortar businesses, providing a direct link between digital ad spend and in-store visits.

A setting that limits the number of times a single user sees the same ad within a defined time period (e.g., no more than 3 impressions per day, or 10 per week). Frequency capping prevents ad fatigue — the phenomenon where overexposure to the same creative causes users to tune out or develop negative brand associations. In geofencing campaigns, frequency caps are typically set at 3–5 impressions per day to maintain awareness without becoming intrusive.

The practice of drawing a virtual geographic boundary — a 'fence' — around a real-world location using GPS, Wi-Fi, cellular data, or RFID signals. When a mobile device enters or exits this boundary, it can be added to an audience segment and served targeted advertisements across digital channels. Geofences can be as small as a single building or as large as an entire city.

A broader form of location-based advertising that delivers ads to users based on their general geographic location — such as city, ZIP code, DMA, or country — rather than a precise physical boundary. Unlike geofencing, geo-targeting does not require a device to physically enter a defined zone; it uses IP address or declared location data to determine eligibility.

The distance from a central point used to define a circular geofence boundary. Radii can range from as small as 25 feet (for a single storefront or trade show booth) to several miles (for a city-wide awareness campaign). Smaller radii produce higher-intent, more precise audiences but smaller segment sizes; larger radii capture more devices but may include lower-intent users. Most geofencing platforms also support polygon fencing, which allows irregular shapes that more accurately trace the footprint of a building, parking lot, or campus.

A digital advertising method that delivers ads to devices associated with a specific IP address. Because IP addresses can be mapped to physical locations, IP targeting can reach households, businesses, or offices with precision. It is often used alongside geofencing to extend location-based campaigns to desktop and laptop devices that do not carry GPS signals.

A single instance of an ad being rendered on a user's screen, counted each time the ad is loaded regardless of whether the user interacts with it. Impressions are the base unit of programmatic advertising inventory and are typically bought and sold on a CPM (cost per thousand impressions) basis. In geofencing campaigns, impression volume is a function of audience segment size, frequency cap settings, and campaign flight duration. Impression counts alone are a weak performance indicator — they must be paired with viewability, CTR, and conversion data to assess true campaign effectiveness.

The Identifier for Advertisers (IDFA) on iOS and the Google Advertising ID (GAID) on Android are anonymized, resettable device identifiers assigned to mobile devices for advertising purposes. These IDs allow advertisers to track ad impressions, measure conversions, and build retargeting audiences without accessing personally identifiable information. In geofencing, when a device enters a virtual boundary, its IDFA or GAID is captured and added to the campaign's audience segment. Users can opt out of ad tracking by resetting or disabling these IDs in their device settings.

An advertising targeting method that identifies household or business IP addresses from a physical mailing list or address database and serves ads to all devices connected to those IP addresses. Unlike geofencing, which captures audiences based on physical location visits in real time, IP targeting reaches pre-defined addresses from a list — making it ideal for account-based marketing (ABM), political canvassing, and direct mail augmentation. IP targeting and geofencing are complementary tactics: geofencing captures in-market visitors while IP targeting reaches known addresses from a database.

A targeting segment built by identifying users who share behavioral, demographic, and location characteristics with a known high-value audience (the 'seed' audience). In geofencing, a lookalike audience might be built from users who have previously visited a client's store, then expanded to reach new users with similar profiles who have not yet converted. Lookalike targeting extends campaign reach beyond the physical geofence boundary while maintaining audience quality.

Geospatial signals derived from mobile devices — including GPS coordinates, Wi-Fi triangulation, cell tower pings, and Bluetooth beacons — that indicate where a device has been at a given point in time. Location data is the raw input that powers geofencing audience construction. High-quality location data is characterized by high accuracy (within 10 meters), high frequency (multiple pings per hour), and deterministic sourcing directly from device SDKs rather than inferred from IP addresses. Privacy regulations including CCPA and GDPR require that location data be collected with explicit user consent.

An umbrella term for the resettable, user-facing advertising identifiers built into mobile operating systems: Apple's IDFA and Google's GAID. MAIDs are the primary currency of mobile programmatic advertising, enabling advertisers to target specific devices, measure cross-app frequency, and attribute conversions without accessing personally identifiable information. Users can reset or opt out of MAID tracking through their device privacy settings. Apple's App Tracking Transparency (ATT) framework, introduced in iOS 14.5, requires explicit opt-in consent before an IDFA can be shared with advertisers, significantly reducing IDFA availability on iOS devices.

The automated buying and selling of digital advertising inventory in real time through software platforms and algorithms, rather than through manual negotiations. Geofencing campaigns are typically executed programmatically, allowing advertisers to bid on individual ad impressions served to devices within a defined geographic boundary across thousands of apps and websites simultaneously.

A geofencing technique that draws a custom multi-sided boundary — rather than a simple circle — around a specific location. Polygon fencing allows advertisers to precisely trace the footprint of a building, parking lot, event venue, or neighborhood boundary, capturing only the devices physically within that exact space. This precision is critical for competitor conquesting (fencing a rival's parking lot) and event targeting (fencing a convention center floor).

A cross-device identity resolution method that infers device connections using statistical signals — such as shared IP addresses, location co-occurrence, browsing behavior, and device usage patterns. Unlike deterministic matching, probabilistic matching does not require a shared login; instead, it uses machine learning models to assign a confidence score to each potential device link. In geofencing, probabilistic matching expands the retargeting audience by identifying household devices that share behavioral patterns with a captured mobile device, even without a confirmed identity link.

In the context of geofencing, retargeting refers to continuing to serve ads to a device after it has left the geofenced area. Once a device is added to an audience segment upon entering a fence, that segment persists — allowing advertisers to reach the same person later on other apps, websites, or devices, extending the campaign's influence beyond the physical location.

A performance metric that measures the revenue generated for every dollar spent on advertising. Calculated as: Total Revenue ÷ Total Ad Spend. In geofencing campaigns, ROAS is often measured through foot traffic attribution (store visits driven per dollar spent) or direct online conversions tracked via pixel. A ROAS of 4:1 means the campaign generated $4 in revenue for every $1 invested. Mediavision2020 campaigns typically target a minimum 3:1 ROAS for brick-and-mortar clients.

The defined period of time — typically 7, 14, or 30 days — during which a user who entered a geofence continues to receive follow-up ads across their devices. After the retargeting window closes, the device ID is removed from the active audience segment and ads stop being served. Longer retargeting windows (30 days) are recommended for high-consideration purchases like vehicles, medical procedures, and legal services. Shorter windows (7 days) are better for near-term purchase intent like restaurants, retail, and events.

A technology platform used by digital publishers to manage, sell, and optimize their available ad inventory in real time. SSPs connect publisher inventory to multiple DSPs and ad exchanges simultaneously, running real-time auctions to maximize yield for each impression. In the geofencing ecosystem, SSPs are the supply-side counterpart to DSPs: a geofencing campaign's DSP bids on impressions made available by SSPs, targeting only those impressions associated with device IDs in the advertiser's geofenced audience segment. Premium SSP relationships are a key differentiator for geofencing vendors, as they determine the quality and brand safety of inventory available to clients.

The geographic region from which a business draws the majority of its customers, typically defined by drive time, distance, or demographic density. In geofencing strategy, understanding a client's trade area informs fence placement decisions — targeting competitor locations, residential neighborhoods, or commuter corridors within the trade area maximizes the relevance of captured audiences. Trade area analysis is particularly important for brick-and-mortar retailers, auto dealerships, and healthcare providers, where the majority of customers live within a 5–15 mile radius of the physical location.

Mediavision2020's proprietary approach to geofencing that combines location-based audience capture with cross-device delivery across web, social, streaming, and programmatic channels. Rather than reaching a person only when they are physically near a location, Universal Audience Targeting follows that audience everywhere they go digitally — maximizing reach, frequency, and conversion opportunity.

An industry-standard metric that measures whether an ad had the opportunity to be seen by a human user. The IAB and MRC define a display ad as viewable when at least 50% of its pixels are in view for a minimum of one continuous second. Viewability is a critical quality indicator in programmatic geofencing — a high viewability rate (above 70%) signals that impressions are being served in premium, above-the-fold placements rather than buried in low-quality inventory.

The percentage of users who were served a geofencing ad and subsequently visited the advertiser's physical location within a defined attribution window (typically 30 days). Walk-in rate is a key performance indicator for campaigns targeting brick-and-mortar businesses, providing a direct measure of how effectively ad spend is driving in-store traffic.