[kaivi]

Can capacitive touchscreens be perhaps useful, with their much larger surface areas?

For perspective, in mid-2013, the combined screen area of just all the iPhones ever manufactured, was around 1.33 square km (214.39 square feet). Source: http://www.wired.com/2013/06/iphone-screens/

[userbinator]

The sorts of disturbances produced by cosmic ray particles are too small to be detectable by a capacitive touchscreen; if they were sensitive enough, it wouldn't function so well as a touchscreen - imagine suddenly occurring, mysterious ghost touches.

(If they were sensitive enough the hardware would probably filter these out anyway.)

[friendly_chap]

1 337 647 square meters = 14 398 312.5 square feet [1]

[1] https://www.google.co.uk/#q=1337647+sqm+to+sqft

[kaivi]

Ugh, I'm confused by those area conversions. Edited to 1.33 km^2. I believe it sounds right and puts scale into perspective.

[pfortuny]

There must be some mistake with the numbers as there are around 9 square feet per square meter. (?).