Information which is read only Information which is added only Information which is updated only Information with no access available When Passwords Are Not Enough A smart card can restrict the use of information to an authorized person with a password. However, if this information is then transmitted by radio or telephone, additional protection is necessary. One form of protection is ciphering, which is like translating the information into some unknown foreign language. Smart cards can cipher into billions and billions of foreign languages, and choose a different language at random every time they communicate. This authentication process ensures only genuine cards and computers are used and makes eaves-dropping virtually impossible.
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