As long as we're changing people's DNA with the vaccine, is there some special gene we can give them to make it easy to verify? I'm thinking along the lines of the characteristic scars that asians all get from their smallpox needles, pic related, but genetic. Like we can make them have a big freckle on their hand or something. This has the advantage that it gets passed on to the children (who also carry the Corona immunity gene from the DNA vaccine).