Our camera keyboard does not use laser, radar, or any other potentially harmful technology, components, mechanisms, or ingredients. The embedded lighting is from ordinary white light LEDs whose radiation impact is less than a table lamp, office lighting, or a cell phone screen.
The embedded lighting only hits the fingers directly. The video shows the bright spots reflected from the bottom because the camera needs to be low enough to capture the screen. A human user in general will not see these bright spots.
This keyboard is safer on radiation than a regular keyboard or touch-screen. It doesn't have circuitry under or surround your finger tips like a regular keyboard or touch-screens, and thus avoids the radiation from the circuitry on your hands. It is the least impactful, safest input device for the user's body on earth today to support the inventor's ideal of protecting human body structures down to the atomic scale.