<<<EDIT: for some reason I missed a page out when reading this thread so some of this comment has already been answered, but Ill leave it unedited so you can see the reasoning 🙂 . Anyway I still don't understand how a glove is different to a screen protector... they both block the finger from direct contact with trackpad....but don't block friction.
-Could your finger be reacting to a build up of its own sweat?
-Could it be the friction between trackpad/trackpad+cover and your fingerprints causing irritation?>>>
Wow this thread is crazy, as a macbook pro retina user i'd never imagine this was even a thing!
Why don't you [and others] purchase a skin for the laptop. A skin such as a sticker which covers all the aluminium palm rests (if you're getting rashes), and one for the trackpad. Could you get an iPad screen protector and cut it to the exact size of trackpad? Also does anybody know the specific technology that the trackpad uses? I imagine its the same used on iPads, and iPhones with their touch screens. I believe they just have a micro grid that detects your body electricity from fingers, how does this give or EM radiation? The glass on the macbook pro retina trackpad seems slightly textured, could this be sandpapering your skin and maybe your skin is more fragile or sensitive? Or maybe theres chemicals or coatings on the trackpad?
Maybe its not the device, maybe your sweat is reacting with something either in the aluminium, plastic keys or trackpad....? Peoples sweat has different PH levels. Some people are saying gloves stop the pain, so it must be something to do with physical skin contact with the computer. If people who experience this are willing, try cleaning the trackpad with different chemicals. OBVIOUSLY DONT pour any on, get something like a small amount of tissue and put a small bit in the MIDDLE ONLY of trackpad. Then move your finger around this area for a while, NOT spreading it to the edges (you don't want liquids to go down the side of trackpad and ruin £1000.). Maybe try things such as: rubbing alcohol, vegetable oil, washing up liquid. Also see if the soap causes less friction with your finger and trackpad, maybe its a sandpapering effect?
The only 2 feasible reasons I can see are:
-The chemicals in sweat reacting with trackpad, and/or your skin is allergic to chemicals in trackpad.
-The very lightly textured trackpad is sandpapering your fingertips.
Does this also happen on iPhone/iPad displays? Their glass is very smooth, but does have a chemical coating. Like i said I'm not sure on some of the specifics here but would like to know more about this issue- I'm sure we all do! 🙂