CNBC has been focusing on frontier technologies this week from artificial intelligence to virtual reality.
But one technology – augmented reality (AR) – has taken off in a big way thanks to the popularity of smartphone game "Pokemon Go".
AR is when digital images are superimposed over the real world via your smartphone. For example in "Pokemon Go", creatures pop up on your screen while the background is whatever your device's camera is pointing at.
With AR getting a lot of buzz, CNBC runs through the apps which you can use to try out the technology.