I'm thinking of making a raised guide to lay over the iPhone screen that will make using the phone keypad quicker and easier. I used to have something like this on a microwave oven back in the 90s, just a sheet of plastic with holes punched out where the numbers were. A sighted person made it for me though.
Does anyone have ideas for materials that would work with the screen, and methods for constructing something like this without having to ask a sighted person for help?
I'm not sure of the best way to transpose the exact position of the buttons on the screen to the guide, otherwise a paper card with holes in it would even work.