61.   When Trithemius said that people can send messages without using letters he probably just meant they could use number codes instead.

62.   When sending information via the Internet, use an encryption code that keeps the information confidential.

63.   Yule had no radio transmitter, but the prisoners could respond by using written codes smuggled into Colditz by British military intelligence.

64.   Others use codes or scrawl instructions on scraps of paper for visitors to smuggle out.

65.   Peterson explains how they used military codes to tap Shakespeare and old film plots to each other on the walls between their cells.

66.   Codes are also used to refer to locations and types of weapons.

67.   Hackers also could use the codes to identify software flaws, making break-ins and virus-writing easier.

68.   Huatong also allowed one client to use trading codes from several clients, the authorities said.

69.   In the new budget, numeric codes would be used as opposed to an alphanumeric code now in practice.

70.   Islamic militants used codes sewn into the lining of a jacket sleeve to pass messages from Syria to the Gaza Strip, an Israeli newspaper reported Monday.