Patent attributes
A portable shield includes a protective shield and a handle attached to the protective shield for holding and carrying the portable shield from a first side of the protective shield. The portable shield further includes a battery and a display element powered by the battery. The display is configured for electronically displaying an instructional message that is visible from a second side of the protective shield at a distance, wherein the second side is opposite the first side. The portable shield further includes electronic circuitry powered by the battery that is configured for selectively displaying the instructional message on the display element. In some examples, the portable shield may wirelessly receive information regarding the instructional message from a base station along with other instances of the portable shield.
