Navilens

Blind transit riders scan NaviLens codes to hear platform info when signage is unreadable.

ENABLE Model location

• Post-launch Compensations → Use Assistive Technologies

What it is

NaviLens serves as an assistive technology that empowers blind transit riders to gain access to critical platform information by scanning special codes. In environments where traditional signage is unreadable or inaccessible, NaviLens provides an auditory alternative, allowing users to hear details they would otherwise miss. It functions as a tool that users rely on when physical environments lack built-in accessible design -- or where accessibility has been bolted on rather than embedded from the start.¹

Why it matters

When accessibility is not built into public infrastructure from the outset -- such as ensuring signage is tactile, high-contrast, or accompanied by integrated audio announcements -- the burden of accessing information shifts entirely to the end-user. People use Navilens to navigate and participate independently where they otherwise could not. However, relying on such tools as a primary access strategy places undue responsibility on people, who should ideally encounter inherently accessible environments. The existence and necessity of post-deployment compensations in transit highlight a systemic failure in the pre-launch stages of urban planning and transit design.

Real-world example

A blind transit rider arrives at a busy train station. The overhead signs displaying train times and platform numbers are entirely visual and cannot be read. Instead of being excluded or needing human assistance, the rider uses their phone to scan a nearby NaviLens code. The app then audibly relays the necessary platform information, allowing them to proceed independently. This scenario demonstrates how NaviLens acts as a crucial post-launch compensation when initial design and content creation failed to provide accessible information.

What care sounds like

• "Our transit system will feature integrated audio announcements at every platform for all schedule changes."
• "We must ensure all signage in our public spaces incorporates high-contrast visuals and tactile elements from the start."
• "Let's test our new station designs with diverse user groups, including those with visual impairments, to ensure all information is accessible."
• "We are committed to making our public information perceivable and understandable for everyone, without requiring external tools."

What neglect sounds like

• "The station signs are self-explanatory, no need for extra features."
• "We only designed for the average commuter, others will figure it out."
• "It's not legally required for our city to have audio descriptions for all signage."
• "We'll add accessibility features later if we have time or if someone complains."
• "The visuals are sufficient; there's no need to describe them or provide alternative formats."

What compensation sounds like

• "I use this app to read the signs because I can't see them otherwise."
• "I rely on this tool to get around the transit system, but it feels like I'm patching what should just work."
• "Why do I need a special app to get information that other people can just see?"
• "I shouldn't have to carry my device and scan codes just to know which platform to go to."

Footnotes

1. NaviLens has been deployed in major transit systems including New York’s MTA, Madrid Metro, and Barcelona's public buses and subways. ↩