Capacitive touchscreens require a conductive stylus, so gloves are typically excluded. And SAW touchscreens won't respond using metal or non-energy absorbing objects. Carefully consider what the operator may use to touch the screen. Since most touchscreens are placed in front of the display's screen, light transmission will be reduced. Aside from the obvious environmental issues of placing products in public locations, another concern is periodic maintenance.
Touchscreens require initial calibration to establish the proper touch field.
However, how often re-calibration must be performed to ensure touch accuracy varies among technologies. There are, of course, other issues you'll need to consider in making your final decision. But we hope those discussed here will get you on the right track. Just visit our Touchscreen Tutorial . And typically, it is at this native resolution where the image is at full screen.