I've dug through my various LCD's and found 3 Tissot LCDs from 1978 onwards, and taken a picture of them, just for you lot :)
It seems I do have one Tissot F1 Sensor, but as you can see its not in very good condition with a chipped glass. I remember buying this off a well known ebay mass watch seller using a fuzzy photo. It full works including the slider sensor, but I was hoping that it would be better than it was :(
It appears functionally identical to the Omega Sensor, and looks like its the same module packaged differently.
I also have another minty Tissot F1 LCD Ana Digi Chronograph alarm with loads more features than I can figure out. Note that the F1 logo is reflective and difficult to photograph and on this particular versions it is not a sliding sensor pad.
Hope you find this of interest. You dont see these watches everday .