https://www.reuters.com/article/us-health-coronavirus-vaccine-apps-focus/airport-security-app-clear-looks-to-score-with-u-s-vaccine-passport-idUSKBN2CK0NG >Over 60 U.S. stadiums and other venues are deploying an app from Clear to verify people's COVID-19 status, placing the New York company known for its airport security fast lanes at the forefront of a national debate over "vaccine passports."