Tozuda
Website unreachable since Oct 21, 2026
Tozuda provides a non-electronic impact-detection technology that makes hidden helmet damage visible through a color change, alerting users when a helmet has been compromised. The mechanism reacts to both linear and rotational accelerations and can be retrofitted into existing helmets or integrated into new designs with minimal tooling. This enables fast, training-free visual inspections that remove damaged helmets from use.
- Hardware
Funding
Funding not disclosed
Founders
Founder details are not available yet.
Product
Problem
Helmet liners and suspensions are designed to absorb damage through breaking, crumpling, rotating, or fracturing, but since liners are concealed beneath the shell, this damage is difficult to detect with standard inspection methods. Minor impacts and abrasions can compromise a helmet's protective performance without any visible external signs, leaving users unknowingly unprotected.
Solution
Tozuda provides an impact-detection technology that makes hidden helmet damage visible through a simple color change. The technology reacts to impacts that meet the force transmission threshold of the relevant helmet standard, changing color to indicate the helmet has been compromised. It can be retrofitted into existing helmet inventory or directly integrated into new helmet designs with little to no tooling. Tozuda's mechanism moves independently and reacts to both linear and rotational accelerations, which are both important because most impacts are a combination of the two. The solution is non-electronic, cost-effective, and reliable, enabling fast, training-free visual inspections that remove compromised helmets from use.
Target Audience
Primary customers are helmet manufacturers and safety equipment companies seeking to enhance product integrity monitoring for their end users across industries such as cycling, motorsports, construction, and industrial safety.
Features
- Non-electronic impact-detection mechanism that changes color when a helmet is compromised
- Reacts to both linear and rotational accelerations simultaneously
- Retrofits into existing inventory or integrates into new designs with minimal tooling
- Requires no training for inspection—any stakeholder can visually identify a compromised helmet in seconds
- Lab-tested precision aligned with helmet standard force transmission thresholds