Smartphones are getting boring. The new models are either a bit faster or have better cameras, but they are basically no different from the ones already in our pockets. This is why scientists are hoping, and working for something new, something that will change our lives just as greatly as smartphones do. At the moment, the next invention might be smart glasses.
Just imagine. Instead of having to pick up your phone and look at the screen, all of the information you need simply appears just in front of you, in your glasses. Satellite navigation（导航） directions would appear right there on the road. And your smart glasses could guide you to the right shelf in the supermarket！
Smart glasses could also be used in industry. They could show engineers the instructions they need to fix things more quickly. A doctor could carry out a difficult operation, guided in real time by someone on the other side of the world.
This may sound impossible. But most of the technologies to invent them are already there. For example, one key technology is called AR, which can make digital 3D objects appear as if they are part of the real world. We've used it a lot on our video call. Similarly, huge progress has been made in spatial audio. This is when a sound is made to give it a sense of place, like what you hear in an empty room. Some high-end earphones can already do that. Future glasses will of course need to recognize（识别）your voice to do tasks. This technology has been widely used in our daily life.
So, why aren't we all wearing smart glasses yet？So far, no one has invented a good way to send images（映像）of our world onto glasses. However, with the rapid development of technology, smart glasses could arrive much sooner than we think.
