Scientific visualisation of a millimetre-wave radar sensing the skeleton and hand motion of a person signing

EPSRC-funded research · University of Southampton

Can smart devices respond to British Sign Language?

Advancing BSL interpretation and inclusion through non-intrusive, privacy-preserving radar technology.

Overview01

A more inclusive route to smart-device interaction.

Many smart technologies are designed around voice. But voice-first systems do not naturally support people who communicate using British Sign Language.

RADAR-SIGN-BRIDGE is developing radar technology so future smart devices could respond to BSL, not only spoken commands. Radar can sense signing movement patterns without recording normal video images, opening a more private and accessible direction for interaction.

Read the project overview

Four connected workstreams.

From creating radar signals to connecting them with language and useful smart-device actions.

01

Radar sign-language simulation

Developing LinguaRadar to generate radar representations of BSL signing motion.

02

Synthetic radar datasets

Exploring how existing BSL video and motion resources can address radar-data scarcity.

03

Radar-to-language modelling

Connecting changing radar signals with signs, glosses, phrases, and English commands.

04

Smart-device interaction

Testing how future devices could respond safely and usefully to BSL-based commands.

Movement patterns, not photographic images.

Radar uses radio waves to measure reflections from hands, arms, and the body. Unlike a normal camera, it does not record a conventional visual image or video of the person.

  • Contactless sensing
  • Works without visible-light imagery
  • Captures distance, velocity, and motion over time
  • A promising direction for privacy-aware interaction
Understand the approach
Our vision02

BSL interaction for everyday technology.

Early use cases could include lighting, heating, media, communication, reminders, doorbell alerts, and calls for help. The priorities should be shaped with Deaf and BSL communities.

LightsHeatingMediaMessagesRemindersSafety

Shaped with Deaf and BSL communities, not only for them.

Your experience can help decide which commands matter, what safeguards are needed, and how a system should behave when it is unsure.