Being outside all day isn’t great for our skin and sunscreen only works for a few hours before you need another slathering. Often times its too late and we get sunburnt, but wearable technology like this smart bikini could help clue us in before we turn into a lobster. Spinali Design has a new line of swimwear with a connected UV sensor in the bottoms that monitors exposure during the day. Connected to an iOS or Android app that knows your skin type, the sensor sends an alert when its time to either reapply or get out of the sun. There is also a ‘Valentine’ function that will send an alert to a friend so they know its time to apply more sunscreen.