Was just researching this myself. Human Factors Design Handbook (Woodson, Tillman and Tillman) says gloved is 3.1cm, and .64cm for non-gloved for HARD BUTTONS. (It's too old to have touchscreen info). And clearly they mean industrial work gloves, not medical "latex".
So, some considerations (based on previous experience): 1. Capacitive touchscreens won't work with gloves! So the 2.5cm difference for hard buttons is a good starting place. 2. The visual size of the button need not be bigger if spacing and touch target are adjusted. Meaning, space things out, and make the target touch area grow into the spacing. That way you don't have to have huge horsey buttons. Unless you like that sort of thing. ;) 3. Since the glove will obscure the screen more than a normal hand will, spacing target farther apart is necessary. 4. I've used ~1cm for touchscreen buttons in the past with success. 3/4" seems large for ungloved, but might be a good starting place here. 5. Prototype something like 1cm buttons with 2-3cm between and try it using a notebook. Not sure what your question is about right-hand biasing. But one consideration is how pressure on the screen pushes the device in the holding hand. So, you either deal with this in the industrial design (center of gravity, handles, etc.) or you actually put frequent controls center and left so people can stabilize the screen well. Of course, this is NOT a rule, just something to consider. ______________________________________________________________________ 1) Does anyone know the numbers for these standards or where else to look for this type of information? 2) Anyone have any suggestions/recommendations for "gloved" hand use? 3) Any experiences with right-hand biasing of the GUI when using a 7" LCD? Thanks for your help, Jeff ________________________________________________________________ Welcome to the Interaction Design Association (IxDA)! To post to this list ....... [email protected] Unsubscribe ................ http://www.ixda.org/unsubscribe List Guidelines ............ http://www.ixda.org/guidelines List Help .................. http://www.ixda.org/help
