You wake up, get dressed, brush your teeth… pull out a little strip of paper from a roll, lick it, set it on the bathroom sink, go make a cup of coffee, then come back to see what colors the paper turns. Depending on the colors, you either 1) Stay home away from the virus, 2) Stay home because you have the virus, or 3) Celebrate surviving the virus (but still shedding virus), and 4) Survived and are done shedding virus.
Whichever outcome, you report it through a handy phone app. Option 4 is of course the one we all want, but until you know you’ve produced antibodies to Covid-19 and are not sick, and are not shedding virus particles, you as a citizen should not be circulating in public.
The paper strips, available either free or super cheap, will come in packs of 100, which you peel off like a finger bandage to expose two bands of compounds. One turns color if it contacts the virus. The second turns color if it contacts antibodies to the virus.
Popping open the app, you photograph the strip to show you checked yourself. The strip is time stamped by the photo, identified by a 2d barcode. When your strip comes back positive antibody, negative virus, you get to take a photo of yourself, which will enter an international database that ID’s you as clean and immune.
Okay, that took me twenty minutes to dream up. What’s missing? I know the strips and reagents and app and database haven’t been invented yet. Yes, the results could be faked, but must be verified with a clinic test after you claim to be healthy.