It's already here. I tested California's on a phone several months ago. Here's the technical spec for it: https://spec.smarthealth.cards/. Absoulte bullshit. Cattle tags that can be used for anything, no anonymity, no privacy. If you cooperate with those in power, you'll get on the list, if not, you'll be doing your shopping at a black market. Eventually, they'll "offer" a chip alternative as a convenience. https://www.dailymotion.com/video/x2t1rt3