These glasses use a physical joystick (on a ring) to control and interact with the display, so it seems they are playing it very safe and this time around. Of

These glasses use a physical joystick (on a ring) to control and interact with the display, so it seems they are playing it very safe and this time around. Of course, there are other ways to screw up (build quality, battery life, connectivity), but by eschewing anything fancy like voice control (ala Google Glass) they're signaling a certain conservatism that is reassuring.