“The Digital Passport enables individuals to participate safely and with peace of mind in activities that involve interactions with other people, including travel, attractions, conferences/meetings, concerts, sports, school and more,” officials added.
The Othena app is being used to schedule vaccine appointments at the county’s mass inoculation sites, including at Disneyland.
Chau also told the outlet that printed cards could be issued for use by people who don't use smartphones.
Aragón said that if federal authorities “don’t move fast enough" with developing such guidelines, "we will come up with technical standards that will be expected—really focusing on making sure that privacy is protected and that equity is protected.”
It comes amid controversy over vaccine passport-style systems, which have been proposed in some countries, and as some U.S. states and regions have either considered their adoption or moved forward with their deployment.
New York state has also rolled out its “Excelsior Pass” system that would require people to show that they have been vaccinated when trying to enter certain events and locations.
Vaccine passports have been criticized by civil liberties groups, who say they would potentially violate Americans’ privacy rights while denying key services to people who are not vaccinated.
The Biden administration has said that it would not develop a federal vaccine passport system, but that it would come up with guidelines around their use and leave development to the private sector and local authorities.
“The government is not now, nor will we be supporting a system that requires Americans to carry a credential. There will be no federal vaccinations database and no federal mandate requiring everyone to obtain a single vaccination credential,” White House press secretary Jen Psaki told reporters at the White House last week.
Psaki last month responded to reports that the administration was working with private firms to create a passport system, saying the administration would only provide guidance.
“Our interest is very simple from the federal government, which is Americans' privacy and rights should be protected so that these systems are not used against people unfairly,” Psaki clarified Tuesday. She again said the government would provide guidance on privacy concerns related to vaccines.
Several governors, including Texas Gov. Greg Abbott and Florida Gov. Ron DeSantis, both Republicans, have issued executive orders barring the use of vaccine passports.
"My private health care decisions—and yours—are nobody else’s business," Biggs said. "Vaccine passports will not help our nation recover from COVID-19, instead, they will simply impose more Big Brother surveillance on our society."