The tags sound an audible warning when workers get too close and also vibrate and set off a flashing light.
They are part of a complete package of covid-19 safety solutions offered by start-up business www.keep2m.co.uk.
Maintenance specialist Highway Care is one of the first firms to use the social distance tags on site.
Operations Director Andrew MacCuish said: “As a company we want to make sure that that Highway Care operatives who are out installing our highway barrier systems at night are given the best possible protection in every aspect of personal safety, whether that be site safety or their own personal health and welfare.
“When we saw them, we saw the potential and are really keen to try them out.
“The fact that these tags can be worn on a lanyard, a belt, or even fixed to a hardhat means they are the least intrusive product we have seen yet.”