When the number of cars injecting vaccines is increasing, the debate about whether to implement a certificate of vaccination also becomes more intense.

Currently, Americans are granted Certificate of Vaccine Covid-19 with paper, but they can easily be counterfeited.

Although the US government said it would not be forced to apply vaccine passports, more and more businesses, from yacht companies to the sports site, saying that they will ask customers to prove the vaccination.

This is making a lot of fairness and privacy concerns in the US.

Many governments, technology companies, airlines and other businesses are testing many different digital medical certification versions and try to provide common standards to create compatibility between systems.

However, the process of digital vaccine passports has accompanied many technical challenges, especially due to the large number of application initiatives being implemented.

In the US, another major challenge is how to request states to share immunization data with different medical certification platforms, while ensuring citizens' privacy.

Vaccine passport application was introduced in Las Vegas, Nevada.

In March this year, New York became the first state in the US deploying the digital medical certificate called ExcelSior Pass, helping to verify the test results and demonstrate full-vaccinated application users.

Applications and websites, there are more than one million downloads, provided free and in voluntary forms for all New York residents.

Most businesses in New York have asked people to produce individual papers with Excelsior Pass applications to prevent fraud cases.

Not only New York, many parts of the world also started applying vaccine passports.

The European Union (EU) also confirmed the implementation of electronic vaccination certificates from July 1, but each member country could still establish its own travel rules.

Some airlines including Lufthansa, Virgin Atlantic and Jet Blue have used Common Pass electronic medical application to verify the passenger's Covid-19 test results before boarding the plane.

President Joe Biden administration declares will not be required to apply to all states.

We look forward to vaccine passports, or any other names you want, driven by the private sector.

By April, Governor Texas Greg Abbott issued a committee to ban government agencies, private enterprises and the State's funding organization asking people to prove the situation of vaccination.

Florida Governor Ron Desantis then issued similar orders, assuming that the certification of vaccination will reduce personal freedom, privacy and social division based on vaccination.

The US does not have federal federal immunization data.

Currently, states are required to share immunization registration information with the Centers for Disease Control and Prevention (CDC), but data is not publicly and may be retained by states.

One of the reasons why many people oppose vaccines are privacy and confidentiality of information, according to Ceylan Yeginsu, nytimes editor.

There are many reasonable concerns about privacy and technology that these systems use, especially when Silicon Valley does not have a good reputation in technology to protect the privacy, Brian Behlendorf, Linux CEO

Passengers at Ronald Reagan National Airport near Washington in February. Photo: Nytimes.

Linux Foundation is working with a network company network called Covid-19 Certification Initiative to develop a set of privacy protection for users of Vaccine certification.

Meanwhile, another number argues that medical certification will violate individual freedom and medical options of each person.

Vaccine passports must be terminated, former Senator Ron Paul, in Texas state, said.

Others who are worried about a digital system can cause many communities to be left behind, especially those who cannot access the Internet or have smartphones.

Any solution in this area must be simple, free, open source, easy to use for everyone and designed with priority priority privacy privacy, Jeff Zients, CoVo Coordinator-

The World Health Organization (WHO) in April said that not supporting the vaccine passport for tourism, because it was not sure if the vaccination could prevent the risk of infection, as well as concerns about calculation