What is a MUPI? Complete Guide to Outdoor Advertising (2026 Edition)

The MUPI is the oldest communication support in the world — and one of the most popular among brands and consumers. In this technical article, we look at the definition of MUPI, its evolution into digital (DOOH), the market standard sizes and content strategies to maximise return on advertising investment.

What does the acronym MUPI mean?

MUPI is the French acronym for "Mobilier Urbain Pour l'Information" (Urban Furniture for Information). The term, originally registered in 1977 by Jean-Claude Decaux (founder of JCDecaux), has become a generalised commercial name used globally to designate eye-level outdoor advertising structures. In English, it is often referred to as City Light Poster or Street Furniture.

Although the brand belongs to JCDecaux, the term "mupi" is today the standard designation in Portugal both for the physical support (urban furniture) and for the advertising format, covering indoor, outdoor and digital variants.

What exactly is a MUPI and what is it for?

A MUPI is a vertical urban panel, typically backlit and protected by glass, installed in high pedestrian-traffic areas to deliver information, maps or advertising. Unlike billboards (which are larger and visible at a long distance), the MUPI is designed for close-range reading.

According to the market definition and dictionaries such as Priberam, it is a "taller-than-wider" support, strategically positioned at:

• Bus and tram stops;

• Metro and rail stations;

• Shopping centres and airports;

• High-street commercial areas.

What are the standard MUPI sizes (JCDecaux)?

The industry standard size for a static (paper) MUPI is 1200 mm x 1750 mm (width x height). Although there are variations depending on the manufacturer or the local council, the 120x175 cm format is the universal benchmark for producing advertising posters for this furniture.

For Digital MUPIs, sizes vary according to the screen technology (LCD or LED), with vertical formats of 75 to 85 inches or custom LED walls being common.

What is an Outdoor MUPI and where is it used?

The Outdoor MUPI is the classic double-sided format installed in public spaces, designed to withstand weather and capture the attention of pedestrians and slow-moving drivers. Since its creation, it has evolved from simple static posters into sophisticated structures that integrate passenger shelters and public services.

In 2025, the Outdoor MUPI trend is creative customisation (such as 3D appliques that come out of the structure) and integration with mobile data to measure audiences in real time.

What is an Indoor MUPI?

The Indoor MUPI is a structure intended for closed, controlled environments, such as shopping centres, underground transport interchanges and corporate atriums. The big advantage of this variant is the proximity to the point of sale, letting you impact the consumer moments before the purchase decision.

What is the difference between Digital MUPI (DOOH) and Paper MUPI?

The main difference lies in content dynamism and remote management: the Digital MUPI allows programmatic advertising, video and the change of campaigns in real time, while the Paper MUPI is static and requires physical installation.

Technical Comparison:

• Paper MUPI: Requires printing costs and posting logistics. The campaign is fixed during the contracted period. Ideal for ongoing, fixed brand awareness.

• Digital MUPI (DOOH): Eliminates printing costs. Allows day-parting (different ads in the morning and at night) and integration with data feeds (weather, traffic). According to recent market data, DOOH (Digital Out-of-Home) generates significantly higher attention and retention levels than static formats thanks to motion.

What is an Interactive MUPI and what technology does it use?

An Interactive MUPI turns the advertising support into a two-way touchpoint, using touchscreens or mobile connectivity to engage the user.

For 2025 campaigns, a complete Interactive MUPI can integrate:

• Touch Screen Panel: For browsing maps or catalogues;

• Cameras and Sensors: For anonymous demographic data analysis (age/gender) and attention metrics;

• NFC and QR Codes: To transfer the public-screen experience to the user's phone;

• Connectivity: Wi-Fi, Bluetooth and 5G for remote management and real-time interaction.

Content Ideas for Digital MUPIs (By Sector)

To maximise ROI on digital screens, the content should be contextual and dynamic. Below, we list segmented strategies:

Corporate and Offices

• Real-time KPI and goal dashboards;

• Meeting room schedules and internal events;

• Welcome messages for clients or partners;

• Internal communication (HR and Internal Marketing).

Retail and Food Service

• Digital Menus (Menu Boards): Instant updates of prices and stock;

• "Flash" promotions based on time of day (e.g., breakfast vs. lunch menu);

• "Appetite Appeal" videos (focused on food preparation);

• Social media integration (user-generated content).

Healthcare and Pharmacies

• Real-time waiting times;

• Promotion of clinical and vaccination services;

• Educational content on health and well-being;

• Doctor and specialty directories (Wayfinding).

Education and Schools

• Campus maps and room directories;

• Emergency and safety notifications;

• Academic merit highlights and academic events;

• Transport schedules and canteen menus.

Tourism and Hospitality

• Digital check-in and Concierge information;

• Local weather and itinerary suggestions;

• Promotion of hotel events (Spa, Happy Hour);

• Real-time flight and traffic information.

How much does a MUPI cost?

The investment in a MUPI varies significantly depending on multiple factors:

• Type of Support: Paper MUPI (static) vs. Digital MUPI (DOOH);

• Location: Indoor (controlled environment) vs. Outdoor (weather-resistant);

• Dimensions: Standard formats (120x175 cm) vs. custom configurations;

• Technology: LCD screens, LED Wall, interactive features (touch, sensors);

• Acquisition Model: Purchase vs. Operational Rental (DSaaS);

• Services Included: Installation, maintenance, content management (CMS).

Given the variety of possible configurations, there is no single market price. Contact our team to receive a tailored quote that reflects the specific needs of your project, location and communication goals.

WOST Digital MUPI Solutions

At WOST, we simplify the transition to digital signage. We deliver "turnkey" solutions that include everything from hardware (high-brightness screens and robust structures) to content management software.

Our solutions cover:

• Rental and sale of Digital MUPIs;

• Technical installation and maintenance;

• Centralised management of screen networks (CMS).

Ready to modernise your visual communication? Get in touch with our specialised team for a tailored project.