HomeHacker News Show HN: Vax.Codes – Open-source Covid-19 vaccine verification QR codes https://ift.tt/3rEVs3E byHat hair -March 11, 2021 0 Show HN: Vax.Codes – Open-source Covid-19 vaccine verification QR codes https://vax.codes/ March 11, 2021 at 07:16PM Tags: Hacker News Facebook Twitter