Digital vaccine credentials and exposure notification apps can be used to safely reopen social and economic activities and allow for more rapid and broader contact tracing. However, an official from the Government Accountability Office (GAO) said the improper implementation of both technologies sparked concerns about privacy, effectiveness, interoperability, and equity that may limit their use and potential public health benefits. […]

Digital vaccine credentials can be used to certify that a person has been vaccinated or tested for COVID-19, but those tools come with challenges that can limit the use of the credentials including security and health data privacy concerns, the Federal government’s chief watchdog agency said. […]