5 Trends Drive the Gartner Hype Cycle for Emerging Technologies, 2020

In most cities in China, citizens and visitors must download Health Code -- an app that indicates COVID-19 status -- to access many public and private spaces and services. A green screen means the person is free to travel, yellow indicates required quarantine and red means a confirmed infection. In India, the Aarogya Setu app indicates which travelers are "safe" to use rail and air travel. The United Arab Emirates recently launched ALHOSN UAE, which also indicates via color if a person is okay, infected or need to be quarantined, but also has an option for "hasn't been tested." ALHOSN UAE is currently being used to grant access to air travel.