Disclosed is a method of authorizing access to an item that maintains a
lockout count and blocks access to the item if the lockout count exceeds
a predetermined value. One feature is that the invention "variably"
increments the lockout count if the presented password fails to exactly
match the stored password. In this process the invention increments the
lockout count different amounts depending upon how closely the presented
password matches the stored password. The invention also provides a
methodology that allocates a plurality of the same passwords to a
plurality of users who share the same userid. The invention allows
continuous operation of the item being accessed by providing that each of
the passwords has a different expiration date. Also, when dealing with
situations where a plurality of users who share the same userid also
share the same password, the invention maps information associated with
the users to the password in a data file and periodically updates the
data file.