| 摘要 |
A method for controlling access to a handheld device (1) by validating fingerprints includes: storing original fingerprint characteristic values of corresponding user accounts in a memory (12) of the handheld device; controlling a fingerprint scanning device (11) in the handheld device to scan a login fingerprint of a user accessing one of the user accounts, and obtaining a login fingerprint image correspondingly; processing the login fingerprint image, and obtaining a negative image of the login fingerprint image; detecting login fingerprint characteristic points in the negative image of the login fingerprint image, and computing login fingerprint characteristic values according to the login fingerprint characteristic points; determining whether the login fingerprint characteristic values match original fingerprint characteristic values of one of the user accounts in the memory; and granting access to the user account if the login fingerprint characteristic values match the original fingerprint characteristic values of the user account.
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