I bet your sunglasses are not as cool as SKUGGA sunglasses. This is a pair of smart glasses that let you control your tint. It relies on an ambient light sensor to adjust the tint to your current environment. The companion app gives you control over how it works. The device is capable of logging your daily UV-light exposure.
SKUGGA protects you from UVA and UVB. It pairs with your smartphone to provide you with a smarter experience. You can find out more on Kickstarter.