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Vision Assist
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Safety & privacy

An experiment, not a safety device.

Vision Assist is an early research prototype. It is not a medical device, not a replacement for a white cane, guide dog or mobility training, and not a guaranteed real-time warning system.

Safety principles

How we design for safety.

  • Complement, never replace

    Vision Assist adds information on top of a cane, guide dog or mobility training. It is never a substitute.

  • Say when unsure

    Low-confidence detections are filtered out or flagged, so the app doesn’t overclaim.

  • Fewer, better alerts

    Urgent hazards interrupt; everything else waits. Repeated alerts are limited to avoid overload.

  • Test with real people

    Every major change is tested with blind and partially sighted users before release.

Limitations

What it can’t do yet.

  • It is a research prototype. It has not been clinically tested or certified as a medical or safety device.
  • The web demo uses a general model trained on everyday objects. It does not yet detect curbs, steps, poles or manholes.
  • Detection can miss objects or label them wrongly, especially in low light, rain, glare or crowded scenes.
  • Distances are estimates from object size and image depth, not measurements. Treat them as a guide.
  • Alerts can be delayed. It is not a guaranteed real-time warning system.

Privacy notice

How this website handles your data.

This notice covers visionassistai.com. The data controller is Sudha Rani Maddala, founder of Vision Assist.

No tracking
This website uses no analytics, advertising or tracking cookies.
Images stay on your device
The live demo runs in your browser. Photos and camera video are never uploaded or stored.
Display settings
Theme, text size, contrast and motion choices are saved in your browser’s local storage, on your device only.
Sign-up form
The join form emails your details to the founder through our email provider, Resend. Nothing is saved on this website. Other contact buttons open your own email app.
Hosting
The site is hosted by Vercel, which keeps standard server logs (such as IP addresses) for security and reliability.
Your rights
Under UK GDPR you can ask what we hold about you, or ask us to delete it, at any time.

Questions or requests: sudhamsr23@gmail.com. Last updated 13 October 2026.