If you’ve ever stood in a busy hospital lobby, a crowded shopping mall, or a bustling transit station squinting at a digital sign, trying to read faded text or figure out a clunky touch interface, you know how frustrating bad indoor digital signage can be. As an indoor digital signage supplier, I’ve spent years walking the line between making displays look sleek and modern—and ensuring they work for every single person who encounters them, no matter their age, ability, or how they interact with technology. Accessibility isn’t just a buzzword here; it’s the backbone of what we do, because a sign that’s unusable for half the room isn’t serving anyone. Indoor Digital Signage
Let’s start with the most basic element that trips so many brands up: text. Too often, suppliers or clients pick small font sizes to cram more information onto a screen, or use thin, light colors that blur at a distance or in bright overhead light. But text accessibility for digital signage has strict, well-researched rules that aren’t arbitrary. For the average person with 20/20 vision, text needs to be at least 24 points for on-screen display at eye level, but that number jumps to 36 points for text meant to be read from 10 feet away, and 48 points for text intended for 20 feet or more. And that’s just the minimum for people with typical vision. For users with low vision—who make up about 1 in 12 adults globally—those numbers need to be bumped even higher, plus there needs to be a way to adjust text size. I’ve seen so many digital signage systems that lock text size to a fixed setting, which is a major misstep. Our team builds adjustable text sliders into every system we install, letting users with low vision or anyone who simply struggles to read small text make the screen larger without warping the layout or cutting off content.
Color choice is another critical piece of the puzzle, and it’s one I see overlooked more often than I’d like. Bright, neon backgrounds paired with similarly bright text look sleek in photos, but they’re nearly impossible to read in spaces with harsh overhead lighting or direct sunlight streaming through a window. The Web Content Accessibility Guidelines (WCAG) 2.1, which our team follows strictly, recommend a color contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. But contrast isn’t just about numbers—there’s the added layer of color blindness. About 8% of men and 0.5% of women with Northern European ancestry have some form of red-green color blindness, which means using red text on a green background, or vice versa, is invisible to them. We avoid color combinations like these entirely in our default templates, and we add a color blindness simulator tool to every system’s admin dashboard, so our clients can test their content before launching it. Just last month, we worked with a local university that was using red links on a gray background for their campus wayfinding sign; the simulator caught the issue, and they switched to a deep blue for links, making the entire system usable for their students with color vision differences.
Next, we have touch interfaces, which are the most common interaction method for indoor digital signage, especially in public spaces. Far too many touchscreens are too sensitive, too small, or require an exact tap to register a selection. For users with motor impairments, arthritis, or even users who are wearing thick gloves in a cold space, this can be a major barrier. We design all our touch interfaces with a “target size” of at least 10mm x 10mm for interactive elements like buttons, links, or menu options. That’s about the size of a penny, which is large enough for even someone with unsteady hands to tap easily. We also add a “hold to select” feature, which lets users hold their finger on an element for half a second instead of tapping quickly, reducing accidental selections. For spaces where touch might be unhygienic—like hospital waiting rooms or food courts—we integrate alternative interaction methods: voice commands, NFC tap points for mobile devices, and even integration with screen readers that work with our signage systems. A few years back, we installed a system at a major airport that let travelers both tap the screen to look up flight times and use voice commands to “find my gate” or “check baggage claim,” cutting wait times for users with motor impairments by nearly 40%, according to the airport’s post-install survey.
Sound is another area that’s often an afterthought for indoor digital signage, but it’s essential for users who are deaf or hard of hearing, as well as for users in noisy spaces. Text-based content needs to be paired with captions if there are any audio elements, like video clips or announcement audio. We also build a mute toggle into every system, which is especially important for users who are sensitive to loud noises or who might be in a space where listening to audio isn’t appropriate. For users who rely on assistive listening devices, we add loop induction technology to our signage systems, which lets users connect their hearing aids or cochlear implants directly to the screen’s audio, eliminating background noise. A clinic we worked with last year reported that 92% of their patients with hearing aids said the loop induction feature made the appointment reminder signs far easier to understand, compared to their old system.
Navigation and wayfinding are two of the biggest use cases for indoor digital signage, and they’re also the areas where accessibility failures are most noticeable. If a sign is supposed to help a user find a bathroom or a conference room, but it’s poorly structured or disorganized, it’s failing its entire purpose. We design all our wayfinding signage with a consistent, logical layout: the most important information (like current location, next steps, or emergency alerts) is at the top of the screen, with secondary information below. We also add clear, high-contrast icons alongside text, so users who struggle to read text can still understand what’s being communicated. For visually impaired users, we integrate screen reader compatibility with all our signage content, so the system can read text aloud or provide audio descriptions of icons and maps. We also follow a “no isolated action” rule: every interactive element on a wayfinding sign has both a visual label and an audio label, so there’s no guesswork for users who can’t see the screen clearly.
Testing is the final, and most important, part of ensuring indoor digital signage is accessible. We don’t just rely on our internal team to test our systems; we work with disability advocacy groups and recruit users with a range of abilities—low vision, color blindness, motor impairments, deafness—to test every installation before it launches. Last year, we tested a new system at a downtown library, and a user with retinitis pigmentosa (a condition that causes loss of peripheral vision) pointed out that the text on our wayfinding map was too small along the edges of the screen, which she could barely see. We adjusted the text size for the map’s edges within a week, and the library reported that it has since become one of their most popular and useful tools for patrons with vision impairments. We also conduct ongoing testing after installation, because as spaces change—new tenants move in, lighting is adjusted, foot traffic increases—so do the needs of users. Every 90 days, we do a full accessibility check of each system we install, updating content and settings as needed.
As an indoor digital signage supplier, we know that accessibility isn’t a one-time checkbox to mark off during installation. It’s an ongoing commitment to designing systems that work for everyone, regardless of who they are or how they need to interact with technology. Too many brands treat digital signage as a decorative add-on, but when done right, it’s a tool that connects people to information, services, and spaces. And that tool should be available to everyone, not just the majority.
If you’re looking for an indoor digital signage system that puts accessibility first, whether you’re a hospital, retail space, transit center, or university, we’d love to talk through your needs and find a solution that works for all your users. Reach out to our team to start a conversation about how we can build inclusive, functional signage for your space.
Indoor Digital Signage References
Web Content Accessibility Guidelines (WCAG) 2.1. W3C.
National Center for Biotechnology Information. (2019). Prevalence of color vision deficiency in Northern European populations.
World Health Organization. (2021). Global report on vision impairment.
American Academy of Orthopaedic Surgeons. (2020). Arthritis and motor impairment: Barriers to public technology use.
Shanghai Vestouch Electronics Co., Ltd.
We are one of the most professional indoor digital signage manufacturers and suppliers in China, also support customized service. Please feel free to wholesale bulk advanced indoor digital signage in stock here from our factory. Welcome to contact us for quotation.
Address: Building 8, No.1098 Chuansha Road, Pudong New Area, Shanghai.
E-mail: yihong@vestouch.com
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