There is no way to tell from the listings page unfortunately. Once you receive the product non-commingled items will have a sticker over the EAN/UPC/Barcode which includes the sellers own SKU, barcode, item condition (New, Used) and item name. If the product doesn't have one of these stickers and the EAN/UPC is uncovered it is most likely commingled.
I've been scraping Amazon for the past few years. Yeah the captcha that they introduced around last February is a pain, but there are ways around it. I have and still do make my living from scraping (not just Amazon) - lemme know if you are interested and maybe I can help someone out.
I was thinking that 4 cameras seems a little excessive when you only really need one for head tracking. But maybe it has 4 and uses one at a time - switching between them when/if one is covered.
Well, you need only need 1 camera for lateral tracking, but I believe you need at least 2 cameras for depth tracking. Possibly a third for eye tracking and a fourth for Skype.
