Patent ID: 7735124

Claim:
A password input and verification method of a financial transaction system for a user to enter a string of characters for authentication against a password pre-set in said financial transaction system, comprising the steps of: prompting said user by an automatic teller machine to enter the string of characters for authentication against said password; obtaining said string of characters entered by said user by automatic teller machine; comparing said string of characters with said password, wherein comparing includes examining said string of characters for each of the following four conditions: said password as a whole is a prefix of said string of characters; said password as a whole is an infix of said string of characters; said password as a whole is a suffix of said string of characters, and said password as a whole is an exact match to said string of characters; and authenticating said user and permitting said user to conduct transaction through said automatic teller machine if said string of characters satisfies any of the four conditions.