In a letter to President Biden yesterday, the Good Health Pass Collaborative expressed its disappointment at the administration?s failure to recognize the need for verifiable digital health passes as a precursor to large scale vaccination and testing mandates. While the letter commended the President for his plan to require employees of companies with more than 100 employees, federal employees, and healthcare workers to be vaccinated, it stressed the urgent need for systems that would enable employers to quickly and easily verify workers? vaccination or test status.