Singapore will make some incoming travellers wear an electronic monitoring device to ensure that they comply with coronavirus quarantines as the city-state gradually reopens its borders, authorities have said.

From August 11, the devices will be given to incoming travellers, including citizens and residents, from a select group of countries who will be allowed to isolate at home rather than at a state-appointed facility.

Travellers to Singapore are required to activate the device, which uses GPS and Bluetooth signals, upon reaching their home and will receive notifications on the device which they must acknowledge. Any attempt to leave home or tamper with the device will trigger an alert to the authorities.