Dynamic signage is being used increasingly within built environments, replacing traditional signs with liquid crystal display (LCD) monitors and LED displays. Refreshable digital screens are being used for many types of signs, including building directories, elevator call systems, room identification/information signs and stop identification signs within transit vehicles.

The dynamic nature of the information provided by digital signs presents many challenges for people impacted by blindness. As with any sign system, information presented visually should also be made available in an alternative format such as audio or tactile information.

The design requirements for electronic signs are no different from those of traditional signs that are read through sight. The technical requirements presented throughout the Signage section are equally applicable to electronic signs.