The article never uses the word blockchain but the logical next step would be to put this on a blockchain. If that does indeed happen than the fear of a two tiered society will become a reality and the unvaxed will be denied their rights.  I have always felt blockchain had great potential for beneficial use, this is not one of them!                                                                            https://www.zerohedge.com/covid-19/who-working-digital-wallet-store-vaccination-certification-official