Bracelet

Young women under the influence of alcohol may be endangered when separated from friends at venues. In an attempt to reduce this possibility, a group of University of Washington students have designed a smart wearable that automatically alerts friends if something may be wrong.

Smartsun is the latest in a line of UV-detecting wristbands, encouraging healthy exposure to the sun by changing color from yellow to beige and ultimately pink when it is time to head indoors. This transformation is caused by an acid-release agent that responds to ultraviolet light.

It can be a fine line between a healthy dose of sun and retreating indoors to coat ourselves in Aloe vera. The UVA+B Sunfriend aims to promote a healthy amount of sun exposure by alerting users when it is time to make for the shade.

The intelligentM system monitors the hand-washing activities of healthcare workers, to make sure that they're doing it properly and frequently enough.

The UVeBand is a UVA and UVB-measuring wrist band, that lets you know when it's time to apply more sunscreen.