It may not be quite up to the spec of Geordi La Forge's visor on Star Trek: The Next Generation, but researchers in Germany have come up with an eyeglass-mounted display that's so freakily high ...

But what about high-tech goggles that don't cost that much, and do have things you can do with them — like play games? Well, those have issues, too. On the one hand, people are buying them ...