Non-visual acoustic guidance for blind and low-vision guests
CaterPillar™ is the Mad Systems non-visual guidance system for blind and low-vision navigation in physical venues. It uses spatially located audio ticks or pulse beacons emitted from stations to help guests orient, move, and reach points of interest more independently within museums, visitor centers, attractions, and other public environments.
Rather than treating accessibility as a separate afterthought, CaterPillar™ brings non-visual wayfinding into the architectural logic of the venue itself. It supports safer navigation, greater confidence, and a more equitable visitor experience while remaining compatible with broader accessibility, operational, and interpretive goals. CaterPillar™ is cane-compatible - it works with standard white canes - but it is fundamentally an acoustic environment, not a haptic device.
CaterPillar™ stations are placed at decision points throughout a venue: at exhibit entries, path junctions, room exits, service locations, and points of interest. Each station emits a spatially distinct audio tick or pulse beacon. A blind or low-vision visitor uses these signals to orient - turning toward the sound of a destination, judging proximity from signal strength and timing, and navigating the physical space through auditory localization in the same way a sighted visitor navigates by sight. No wearable required. No smartphone required. No language assumed.
CaterPillar™ is an AV++® technology. It runs on QuickSilver® nodes and integrates with WorldModel™ for coordinated venue-wide accessibility governance. In full AV++® deployments, visitors can receive Alice® interpretive content and Lory® multilingual audio through their own devices while CaterPillar™ handles physical navigation - the three systems working in parallel, each addressing a different layer of the accessible visit.
CaterPillar™ is patent pending and available for direct deployment as part of the AV++® architecture. Specification guidance and early-stage consultation are available before construction documents are issued.