1. Singapore began handing out pocket-sized coronavirus contact-tracing devices to residents, part of a planned nationwide rollout to help the city-state safely reopen its economy. 2. Like an earlier smartphone app released by the government, the box-shaped tokens use Bluetooth signals to record nearby devices and store encrypted data of a users' close contacts. 3. If users test positive for COVID-19, the devices have to be handed over to the authorities to extract the data of other people they have potentially exposed to the virus. 4. The government prioritised universal distribution of the tokens, to elderly residents because they are less likely to have smartphones and therefore own the existing app 5. Singapore has not made the app or token mandatory but has urged residents to use them when they are outside their homes.