image: file://ia85w89pff65h1nq)
A text is sent from a sender (on the left) to a receiver (on the right). When a viewer opens the door on the center box, 4 LED panels freeze in one of four colors (red, green, orange, dark). Displayed on the panels is a quantum encoded ASCII character. The viewer has intercepted part of the encoded message, freezing its state. As soon as a message is frozen, the sender and receiver, aware their conversation has been interrupted, start again from the beginning.
