Arthit Ourairat, the rector of Rangsit University, posted pictures of the hi-tech cheating equipment on his Facebook page on Sunday evening, announcing that the entrance exam in question had been cancelled after the plot was discovered.

Three students used glasses with wireless cameras embedded in their frames to transmit images to a group of as yet unnamed people, who then sent the answers to the smartwatches.

Arthit said the trio had paid 800,000 baht ($23,000) each to the tutor group for the equipment and the answers.

"The team did it in real-time," Arthit wrote.