Existing braille keyboards for the visually impaired were heavy and expensive, making them uncomfortable to use. However, the T-Dot is a product that improves upon all these weaknesses at once. This product combines excellent portability with light weight (59g) and grip by modifying the Perkins-type structure common to Braille keyboards into a T-fold structure, resulting in a reduction of width by about half, weight by about 1/10th, and of the price by about 1/10th. Made with 12 input keys and 1 jog wheel, it is dedicated to boosting the navigating function that allows users to type faster and more conveniently.