you'd have to miss by an awful lot (meaning ~40% of the entire screen
I just used the ES&S automark last week (A slightly different machine from the same company). The tolerance of where you need to press is less than the width of my finger. I took a video of this to prove it. http://shultzonline.com/vote/ In the video there are only two candidates, yet they are still right next to each other, and in the video you can clearly see the calibration is off enough to incorrectly select the wrong candidate. You cannot argue that this interface is unacceptable.
SMD doesn't seem like a term that goes together with 'retrocomputing'. But I finished the hardware for my Spectrum add-on board today, which included three surface mount (SOT-23 packaged) transistors.
"A complex system that works is invariably found to have evolved from a simple system that worked." -- John Gall, _Systemantics_