In order for you to have the tools to convey your messages across screen media you need to know what it is you want to say. The types and frequency of your narrative and branding shapes the hardware and software to consider, as well as help you decide locations and content to prepare.
Are you going to just show text or expand to video?
Are you going to want to include multiple zones on the sign?
This means partitioning the display to include different inputs like announcements and weather. Is the sign going to be used for emergency notification? Then that means it’s location and the content must meet specific standards.