11.   The infrared devices have raised some eyebrows, but some doubt that they can be used effectively to cheat.

12.   The pilot circled around twice to get a better look visually and with the help of a special infrared targeting device that creates images from the heat of vehicles.

13.   Unlike rudimentary infrared devices like TV remote controls, which can only send signals, computing devices typically can both send and receive infrared signals.

14.   With the infrared device, astronomers plan to search for evidence of the earliest galaxies in the most distant realms of the universe and for planets around nearby stars.

15.   The stickers must be put on a certain part of the car to enable detectors to identify the stickers through infrared scanning devices at three locations.

16.   They also looked into rooms with infrared devices from a helicopter and used magnetic equipment to detect land mines around the residence, the sources said.