Smart rings are more than just stylish accessories you wear on your finger. The Oura Ring (for example) looks great and is a great health tracker. They're miniaturized health trackers that pack a surprising amount of functionality. But how exactly do these compact devices work their magic? They can offer many of the same features of a smartwatch or fitness tracker but only a fraction of the size.
Let's have a look at the bits and bobs that make a smart ring work, transforming it from a simple piece of jewelry into a window for your health.
