ok its this keyboard, basically its in a bracelet you wear all the time. when you raise your hands a certain way it appears below your fingers. It also interfaces with the console thats in front of you. And all the tech in this world would use it. So lets say you couldn't find the shoe department in the department store or something. you'd go up to the store console and pull up your keyboard and type that you were looking for shoes and the map would tell you where to go!
people could customize it so it could appear in different colors and such