I have had keyboard keys fall of laptops and get lost and it is very annoying but I couldn't find anywhere where I could just by the keyboard key and not another keyboard but I didn't want to have to buy another keyboard so I decided to design one in solid works the would work with multiple different types of laptops. It can also work if you are blind or have a child who is blind who wants to type and all you have to do is add braille to the keyboard key.