As we now understand, the sensational expose of Formula 1’s Max Mosley was captured by a dominatrix with a bra camera.

‘Hey, a bra camera!’ said a kinky girlfriend. ‘Why haven’t I got one of those.’

Why not indeed. Of course, I assumed I was, as usual, out of techno touch and might pick one up from PC World. But when I finally tracked down one of PCW’s rare spotty assistants, he claimed they’d never heard of bra cameras. ‘Not for Mac or Windows’, he added emphatically.

Later, I’d forgotten about the bra camera until the revelation that Mistress Abi, the girl lucky enough to spank the FIA’s loathed President, was actually married to a serving MI5 officer. Aha. Obviously bra cameras are standard MI5 issue.

The wonderful resource that is Google soon revealed that the KGB were the first intelligence service to develop bra cameras. The Zenit F 21 Soviet Observation Camera could, they say, be worn under a light summer dress without being noticed. (Though I reckon I stare at cleavages harder than they think.)

And what if the lovely Russian spy isn’t wearing a bra? Well, you’re still not safe, because the F21 was also specially designed to be disguised in jean belts, buckles and buttons. So much so, that it didn’t even have a viewfinder.