Abstract: An electronic device displays a wake screen that includes a representative image in a sequence of images. While displaying the wake screen, the electronic device detects an input that includes a contact over the wake screen. In response to detecting the contact over the wake screen, the electronic device displays, in sequence, a plurality of images in the sequence of images.

Abstract: A system for optical communication through a structure includes a light pipe extending from one side of the structure to another. A sensor in communication with one side of the structure is capable of producing a sensor signal responsive to an environmental condition. Transmitter electronics are joined to the sensor for producing an electrical signal. A light source is joined to the transmitter electronics and to the light pipe to provide an optical signal. An optical detector receives the optical signal from the light pipe on the other side of the structure. Receiver electronics are joined to the optical detector and provide an output signal.