So you want to find out how fast you are going on your skateboard? The Lancaster GPS kit can help. It is a footstop with a built-in GPS speedometer that shows your speed. It has a durable aluminum casing, an adjustable aluminum mount, and a large display. It even has lights for nighttime action. The Lancaster ALPHA pairs with your smartphone, allowing you to keep a closer eye on your performance.
The above video gives you a better idea how the Lancaster works. More information is available on Kickstarter.