It looks like those not fond of 3D glasses will soon have another means to add an extra dimension to their laptop. Sony's now showing off a simple lenticular sheet that can be placed on top of a standard laptop screen for a 3D effect. That will initially be available for Sony's VAIO S series laptops and, most interestingly, it comes complete with some head-tracking software that takes advantage of the laptop's webcam to adjust the 3D image based on your position. Unfortunately, as simple as it may seem, it's still not exactly the cheapest solution -- you can expect to shell out €129 (or about $180) when this optio
