The item concerned is a digital license plate for an automobile. It is referred to as the rPlate Pro. The rPlate Pro is a digital, smart connected license plate that replaces a standard metal license plate. It consists of a monochromatic reflective bi-stable display screen, processor, memory, Bluetooth and modem modules, GPS for location tracking, and an accelerometer to detect vehicle motion (braking and acceleration). The primary purpose of the rPlate Pro is to act as and replace a standard metal license plate. The display can be modified, as approved by the local authority, to display digital versions of the currently approved vanity and special interest plates. The user, via the phone app, can currently change a message at the line of script at the bottom of the plate to be any one of 96 messages. Additionally, the rPlate will have the capability to show the registration status of the vehicle, local public service messaging and notification if the plate is detached from the vehicle or if the vehicle is reported as stolen.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N299230