Abstract: A wireless data processing device is described which periodically exits an unpowered state and transmits location data. For example, one embodiment of a wireless data processing device comprises: power circuitry for maintaining the wireless data processing device in a powered or unpowered state, the power circuitry causing the wireless data processing device to enter into an unpowered state responsive to user input; a timer to periodically power up the wireless device or portion thereof in response to reaching a predetermined time; a location services module determining a current location of the wireless data processing device using one or more specified location determination techniques; a transmit thread transmitting the current location of the wireless device over one or more specified communication channels; and the power circuitry powering down the wireless data processing device a second time after the current location has been transmitted.

Abstract: An electronic device may contain components such as flexible printed circuits and rigid printed circuits. Electrical contact pads on a flexible printed circuit may be coupled electrical contact pads on a rigid printed circuit using a coupling member. The coupling member may be configured to electrically couple contact pads on a top surface of the flexible circuit to contact pads on a top surface of the rigid circuit. The coupling member may be configured to bear against a top surface of the flexible circuit so that pads on a bottom surface of the flexible circuit rest against pads on a top surface of the rigid circuit. The coupling member may bear against the top surface of the flexible circuit. The coupling member may include protrusions that extend into openings in the rigid printed circuit. The protrusions may be engaged with engagement members in the openings.

Abstract: An electronic device may be provided with a display. Backlight structures may be used to provide backlight for the display. The backlight structures may include a light guide plate. A rectangular ring-shaped chassis may have a rectangular opening that receives the light guide plate. One or more edges of the chassis may be provided with an array of notches that receive light-emitting diodes or other light sources. The light sources may launch light into edge portions of the light guide plate. The chassis may include a first plastic structure such as a light reflecting structure formed from a material such as white plastic. The first plastic structure may surround two or more peripheral edges of the light guide plate. The chassis may also include a second plastic structure such as a light blocking structure formed from a material such as black plastic that helps prevent light leakage.