The Interoperability Challenge of the COVID-19 Return-to-Work App Ecosystem

There is a large and growing app ecosystem to help manage the return-to-work phase of the COVID-19 pandemic - covering everything from contact tracing to self-attestation and lab results. One of the key questions that will need to be answered is how these apps communicate with one another as employees find themselves crossing borders between companies. This paper lays out the core challenges and current landscape and offers suggestions for companies, governments, and NGOs that are participating in this space.