1. Wearables are connected devices that measure something or show information. Fitness trackers are the best examples, but also smart watches and body worn wireless heart-rate monitors. They typically communicate with a gateway devices such as your smartphone using bluetooth, but also cellular models that will connect to the internet directly will appear as the next generation.
2. They are instrumental in the trend of gathering as much data about a person as possible. The data can provide insight in your health. Smart watches can make other data even easier available.
3. Websites might become more personal, if they can tailor their content based on the data gathered from wearables.
4. Communication will become easier (augmented reality glasses), and more personal (advertisement based on your behaviour).
