11.   The beacon in every working lighthouse flashes a special code, Cornwell explained.

12.   The CDC has said it favors names because special codes that contain personal information without revealing identity are not necessarily reliable or efficient.

13.   The company, Benefit Consultants Inc., encrypted each bank account number in a way it thought would not be identifiable without a special code.

14.   The report also listed submarine-detection, space-weapon information and special nuclear codes among the compromised data.

15.   The system is built around a wristwatch-size device that only transmits when a special code is broadcast from home base.

16.   The special codes would be transmitted along with each program, enabling a computer chip in the television set to screen out any programs with ratings parents deem objectionable.

17.   There is also a motion detector inside, which requires a special code to shut it off.

18.   The young people are slaves who learn a special Underground Railroad quilt code that was actually used before the Civil War to help runaways.

19.   They could also use special codes to verify their identities.

20.   When checking in, children are given day-glo wristbands on which their names and special codes are inscribed.