You might have noticed a small dot or bump on the number 5 button of your remote control. This seemingly insignificant detail serves a very practical purpose, especially for people with visual impairments. Remote manufacturers incorporate this tactile marker to make it easier for those with low vision or blindness to navigate their remotes. The bump acts as a reference point, allowing them to identify the location of other buttons and control their TV or other devices more easily. This thoughtful design feature is also common on computer keyboards for the same reason.