I just came across this eBay listing for a specialized Dreamcast that I've never seen before. It appears to be made specifically to check the functionality of a Dreameye camera. I'm guessing it's just a stock VA0 Dreamcast with a special BIOS. Very interesting though. Can't find any reference to it anywhere online.
https://www.ebay.com/itm/Ultra-Rare-Seg ... ~&LH_BIN=1