I have a 19" Dell that has optical touch in my main venue. The optical touch works by 2 small cameras mounted in the corners of the bezel - it is nothing like capacitive touch and actually does not require direct contact with the screen. It only supports 2 points, but has always worked well.
Though the seller indicates only up to Win 7 officially supported (and my Dell model only has offcial driver support up to Win 7 as well), I managed to find a driver that works in Win 8 and 10. You can try the NextWindow Win 7 drivers or look specifically for a Voltron driver - that is what I use now in Win 10… took some time to get it working since Windows wanted to “update” it, but I forced it to use the Voltron driver.
Shame the resolution isn’t a little higher for such a big screen but clearly fairly old model.
He has a 55" iimyaya one aswell but £500!
But too big lol
