Snap Inc. has launched its third generation of the Spectacles. This time around, the main draw is not one but two cameras that can capture in 3D. The Spectacles 3 have two HD cameras on either side, which can capture both photos and videos in 3D. These can then be transferred on to your phone and viewed in the Snapchat app by tilting your phone around for the perception of depth. Or, you can use the bundled 3D Viewer, which is a cardboard doodad for holding your phone much like Google Cardboard and view the captured photos and videos in proper 3D. The glasses can capture images in a...