South Korean blockchain company GG56, a South Korean company, has already developed its own COVID-19 digital pass, ‘Pass&Go’ The company has announced that they will release the source code and intellectual property rights of Pass&Go to the public for free for the greater good of humanity. GG56 also announced that it has signed business agreements with 8 Korean testing kit companies, including PCL, PCL and PCL. The company is promoting the synergies between the biotech and digital technology industries and strengthening the competitiveness of Korean diagnostic kit manufactures.
Source: https://www.helpnetsecurity.com/2021/07/05/gg56-covid-19-digital-pass/