A tablet communication device on an adjustable arm with an eye-tracking bar, one gaze-selected tile glowing cyan and a sound wave rising from its speaker

AAC Communication Software

Healthcare
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Healthcare2 years

AAC Communication Software

Augmentative and Alternative Communication (AAC) covers the devices, systems and strategies that replace or support natural speech for people with communication disorders. For an established assistive-technology company, RemSoft.Dev built AAC software on C#/.NET and the Windows 10 SDK, integrating Tobii eye-tracking hardware so users can compose speech with their gaze, and AI-based word prediction to speed communication. For a person using a communication aid, the software is their voice - any lag or failure is an immediate loss of the ability to interact with the world - so reliability, accessibility for users with limited motor control, and a stable platform for continuous updates and new languages were the defining requirements. The product shipped on desktop and mobile over two years, delivered by a senior developer, a middle developer and a project manager.

AccessibilityAACAssistive techAI

Key Challenges

Client: Assistive-technology company, UK

Duration: 2 years

Team: 3 - senior developer, middle developer, PM

Platforms: Desktop and mobile

The project faced several key challenges:

  • Accessibility and inclusion: An interface that remains fully usable for people with limited motor skills - navigable with minimal effort, including by eye gaze alone.
  • Real-time reliability: The software is the user's voice. Lag or a crash is not a bug, it is silence - uptime and responsiveness were non-negotiable.
  • Natural interaction: Moving beyond pre-recorded phrases: word prediction that learns from the user's behaviour to make communication faster.
  • Platform stability: An architecture that supports continuous updates and new language integrations without disrupting existing users.

Results

  • Tobii eye-tracking integration
  • AI-based word prediction
  • Desktop and mobile delivery
  • Built for continuous language updates

2 years

of development for a product people depend on daily.

Eye-gaze

input via Tobii hardware for users with limited motor control.

3 people

a focused team with deep ownership of the product.

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