Because digital signage is most commonly displayed on large screens, there are a few design considerations to keep in mind:

Design for maximum visibility/readability from a distance. Although you are probably displaying on a large screen, the displays are often suspended from high ceilings or at the back of a room. Avoid thin-lined graphics and text fonts. We suggest starting font sizes at 42- 50 points. You may have to experiment a bit to maximize your results.

Keep individual screen layouts simple and bold. If you are dividing the screen into multiple zones, we suggest no more than 5 different “zones”, i.e. different image areas, to ensure maximum readability and performance. Fewer zones are better for those displays with a shorter available “viewing” time, such as high traffic malls. Be aware: each different “zone” runs independently. That means your computer is working hard to run each piece of content, and content in one zone may interfere with content running in another zone. For Instance, a complicated Flash, or loading large still images, may cause a ticker to a slow to a near stop or playback in fits and starts.

Consider how long your message will be viewed by audiences, and create your content accordingly. The majority of messages are viewed an average of 15 seconds (interactive messaging is an exception). Keep your messages short and to the point, and your design elements simple but eye-catching. If the signage is to be used in a waiting room or other areas with longer wait times, then length and complexity of the messaging can be increased. 

When using plasma screens, vary the layout, location of graphics, and brightness of all elements as much as possible to avoid burn-in.

Experiment with transitions between files. Refresh rates for most screens will show dissolves up and down as gradated shades of light to dark, or vice versa try different wipes, geometric shapes, etc. to “mask” the transition.