“I have some electronic equipment but really no experience or expertise in building circuits or things,” he told Guardian Australia.
“I had a part that detects magnetic fields. I thought that if I built a circuit that could detect the magnetic field, and we wore magnets on our wrists, then it could set off an alarm if you brought it too close to your face. A bit of boredom in isolation made me think of that.”
However, the academic realised the electronic part he had did the opposite – and would only complete a circuit when there was no magnetic field present.
“I accidentally invented a necklace that buzzes continuously unless you move your hand close to your face,” he said.
Well, trial and error, yo know.
Of course, then he carried on playing with the magnets and got them stuck up his nose.
But I do like inventing the opposite. He is from the counterweight continent after all.