How do you make an iMac a touch screen?

You don't.

Yeah- you don’t - it doesn’t exist natively.- functionality isn’t there. Unless you wanted to buy a touchscreen external monitor. Viewsonic makes one -24 inch, 1080 p,$ 421 canadian.. plus you would need the vTouch software for Mac. Here’s a link to the monitor itself and the mac software for it that you would need to use it: LINK

https://www.viewsonic.com/us/products/shop/monitors/touch-screen-monitors/td2455.html

john b

Hi aarna176,

You cannot. There is no functionality for this at all.

Cheers,

Jack