Lumisafe utilizes advanced depth sensor technology to provide its privacy-friendly fall detection capabilities. At the core of this technology is the Time-of-Flight (ToF) depth sensor. Unlike traditional cameras that capture standard color images (RGB data), ToF sensors work by emitting light (often infrared) and measuring the time it takes for the light to bounce back after hitting objects in the environment. This measurement allows the sensor to determine the distance to each point, creating a detailed 3D map of the space.

The key advantage of using Time-of-Flight depth sensors in Lumisafe devices is the inherent privacy they offer. Because these sensors only capture distance information and not visual details like faces, clothing, or other identifying features, they ensure that no personal or private information is ever recorded or transmitted. This makes Lumisafe an ideal solution for sensitive areas such as public restrooms, bathrooms, and various healthcare environments where privacy is paramount.

The depth data captured by the ToF sensor is then processed locally on the Lumisafe device. This local processing is another critical aspect of Lumisafe's privacy-first design. The raw depth data is fed into built-in machine-learning models, including one specifically trained for pose estimation and another for accurate fall detection. The entire process, from data capture to analysis and even personalized model training, happens directly on the device using open-source hardware solutions.

This combination of privacy-focused depth sensor technology and local processing ensures that users can trust Lumisafe to monitor for falls without compromising their personal space or data security. The depth sensor provides the necessary spatial information for the AI models to function effectively, while its inability to capture RGB data guarantees that visual privacy is maintained at all times. This technological foundation is what allows Lumisafe to deliver both high accuracy and robust privacy protection in its fall detection systems, such as the Lumisafe S1 for families and the Lumisafe P1 for public spaces.