Use light background colors if possible. This reduces the visibility of fingerprints and improves legibility in a light environment.
If possible keep to the basic colors red, green, blue, yellow, magenta, cyan, black and white. On flat-screen displays, only these colors ensure the optimum reading angle.
Define your touch-activated zones as “finger-friendly” as possible (a finger is not a mouse pointer!).
Use the options for showing and hiding objects, and, if possible, only provide the operator with those action fields that are required at that moment. This will ensure a more intuitive application and make it easier to use. This approach will also ensure optimum use of the benefits of touch screen technology.
Use the Beep function as an acoustic feedback signal.
Take measures to prevent operating errors such as using the #Screensaver, additional confirmation prompts for critical actions etc.
Input and display fields should be clearly distinguishable visually, so that the user will intuitively recognize screen areas with touch activated input fields.