Technology has grown really fast in the past few decades and we have all seen a lot of new technology coming to the market in the past few years. From pressing keys to typing words to speaking and having your machine recognize your voice, everything is now possible.

One new technology is gestures. A gesture is what allows you to use your body-parts to control your machine. For instance, you can just wave your hand at your machine and it will respond. Most of the time, the gestures are used while playing multimedia content. If you are a Mac user you have a cool app called ControlAir that lets you control the multimedia content on your Mac using gestures.

Full article here:
How to Control Multimedia Content with Gestures on Your Mac (Make Tech Easier)