by Cynthia O'Donoghue and Katalina Bateman
On 13th May, the European Commission's eHealth Network published its interoperability guidelines for approved contact tracing mobile applications in the EU, guiding developers when designing and implementing applications and backend solutions to ensure efficient tracing of cross-border infection chains. These guidelines serve as a follow-up action to their previously published 'Common EU Toolbox for Member States' on mobile applications to support contact tracing in the EU's fight against COVID-19 on 15th April.