Discover NaviLens

The cutting edge technology for the visually impaired

Play NaviLens video

A brand new system of bidimensional, or BIDI, codes

Pedro using NaviLens in the office

The application is based on a novel system of artificial markers, which combines high density (multitude of combinations) with long range (a 20cm wide marker is detected up to 12 meters away).

In addition, the detection algorithm could read multiple markers at the same time, at high speed and even in full motion.

Discover the interface

100% user friendly interface for the visually impaired

Navilens interface



Reading markers with NaviLens is almost instantaneous.


Capable of reading the labels from long distances, depending on the size of the marker.


No need for focusing, which is essential for people with visual impairments.


Navilens algorithm detects the tags when the user is walking or in motion while the cell phone is pointed up.


Navilens accurately detects the distance between the user and the tags. In addition, NaviLens provides the relative angle of the user with respect to the tag.


It detects multiple tags simultaneously, efficiently communicating them to the user

See for yourself!

This is how NaviLens can help the visually impaired. Below discover the testimonials of the first users

Where is NaviLens?

Public Transport System of the city of Barcelona: underground and bus

Play TMB video

Murcia Tram

Play Murcia Tram video

Archaelogical Museum of Murcia

Play Murcia museum video

Transports of Murcia

Play Transports of Murcia video

Tag your life with NaviLens!

New Free NaviLens codes for Schools

NaviLens Tag

The team

The team


NaviLens was given the prestigious award Connecting for Good by the Vodafone Foundation

Cartes Bancaires

Viva Technology
Winner 2019


Digital Innovation Award
Winner 2018

Everis Foundation

Everis Awards
Winner 2018

La Verdad Multimedia

Best App
Winner 2018

La Opinión

Enterprise 4.0 Award for digital transformation
Winner 2018


Best ICT company in the region
Winner 2018

Fundación Vodafone

Connecting for Good
Winner 2017

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Here is a brief summary of the most frequently asked questions posted by users

NaviLens is a new integral system of artificial markers based on Computer Vision. It allows the user to read a special tag, displayed in their environment, from a great distance; it also assists in orienting the user toward the tag as well as obtains detailed information associated with that tag in particular in the same way that traditional signs would be read by a person with full visual capacity. To do this, the marker recognition algorithm is complemented by a novel 3D sound system that, without the need for headphones, informs the user of the position, distance, and orientation of the marker. It allows a visually impaired person to navigate in unfamiliar territory with complete autonomy in the same manner a person without a visual impairment could.

NaviLens consists of a web application with which the tags are designed and managed as well as a mobile client to read them (for iOS and Android). The application is fully accessible with graphic elements of large size and high contrast. We have taken into careful consideration the integration of TalkBack and Voice Over as these are two interfaces that people with visual impairments use to interact with their phone. It also has a 3D Sonification System that does not require headphones so as to not deprive the blind user of hearing in order th allow the completely blind user to perceive the position and orientation of the marker.

The interface of NaviLens is very simple. It consists of a main panel which displays the captured tags along with four buttons on the bottom toolbar. The panel shows the tags in the reverse order in which they are captured.
  • Settings - The user can modify both the location mode and the additional message information.
  • Flash - Activates or deactivates the flash for low light environments.
  • Zoom - Use the zoom functionality to capture labels at twice the distance.
  • About - Information about the creators and help.

The complete NaviLens system is available in 18 languages ​including English, French, Spanish and more, so that each user receives the information contained in the signs in their own language. We are currently working to incorporate the languages ​​requested by our users. You can leave us your suggestions at

NaviLens is developed by the Mobile Vision Research Lab of the University of Alicante and Neosistec. For any questions, comments or suggestions, you can contact us at

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Tag your life with NaviLens!

New Free NaviLens codes for Schools

NaviLens Tag