https://www.reuters.com/article/us-health-coronavirus-singapore-tech/singapore-plans-wearable-virus-contact-tracing-device-for-all-idUSKBN23C0FO

Singapore plans to give a wearable device that will identify people who had interacted with carriers of coronavirus to all of its 5.7 million residents, in what could become one of the most comprehensive contact tracing efforts globally.