The K-id Discord ID verification is designed to weed out would-be imposters, and asks user's to open and close their mouth to verify they're a real person. Thanks to Kojima's attention to detail, that's easy enough in Death Stranding, as 'Sam's expression' bar lets you pick through facial expressions. This requirement for facial movement appears to weed out, say, using an image of a game character on the cover of PC Gamer magazine, but it's not much of an issue for games or even AI to circumvent.