Riding a bike around town while looking at a smartphone for directions is downright dangerous. The SmartHalo 2 translates directions from your smartphone into colorful LED lights on your handlebars that point to the next turn. Cyclists can choose turn-by-turn navigation or a “compass” setting that points them in the right direction, but lets them pick the best route from A to B. It also has an antitheft alarm and syncs with popular fitness apps.