The device – to be known as the ‘ClipOn’ – will initially be trialled by UK rental company Speedy. 

It responds to a demand from some major UK contractors for such a device to be fitted to boom lifts working on their sites, and follows Nationwide Platform’s 'Harness On' and Haulotte's 'Fastn' devices, which were introduced last year.

According to reports, the device does not interfere with the machine’s design and is relatively easy to fit. If anyone attempts to operate the machine without a harness attached, the device will emit a continuous alarm, not dissimilar to a car’s seat belt warning. 

Once the D-Ring of a harness lanyard is clipped on to the circular anchor point, the alarm will stop and a green light is illuminated both at the anchor and on the underside of the platform, where it is visible to those working below.