Saturday, November 23, 2019

Are there any special design guidelines for big touch screens (30–50 inch)?


I'm about to develop an application for a large touch screen (around 40″). Now to my question, are there any special design guidelines for such a large screen? I have read Android/iOS/Windows RT design guidelines, but most of them focus on mobile and tablet screens (although some of them are mostly usable even on larger displays).


Unfortunately I haven't decided which language to implement my application in (maybe Python or HTML5 but who knows).


If you have any resources or other threads where this topic is covered it would be most welcome =)


Thanks in advance.



Answer



The same basic principles apply whether it is a tablet, smartphone or a touchscreen, they just translate differently.



Although your touchscreen may be massively larger than a smartphone, you aren't going to have it as close to you as you would a smartphone, so the relative visual size isn't as different as you may think.


I would personally follow the sizes and dimensions for a tablet, and then scale them up a little less than is proportional. So something on an 11 inch tablet that would be say 10mm, would be something like 30mm.


You need to keep in mind that your touch screen will likely have a comprable resolution to an iPad, but just be larger, so you need to translate guideline sizes into millimeters rather than pixels.


For example, the iOS HIG suggests that tappable items should be at least 44x44, and the Android design guidelines give 48x48. Both of these are based on the idea that the tappable area should at a minimum be about 8-12mm minimum on each side.


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