FIELD: information technology.
SUBSTANCE: method comprises of the stages at which the biological feature data of the current user is recognized, wherein the biological feature data includes fingerprint data, voiceprint data, iris or face data, and the first specified file is locked by using the biological feature data of the current user. In embodiments, the designated file is locked by using the biological feature data of the user, so that the images and videos can be hidden, and the current user's personal privacy can be effectively protected, and the user experience is improved. Moreover, the user can select which file is to be locked if necessary, which is flexible in use. The present invention further provides a device for file locking and a mobile terminal.
EFFECT: increased reliability.
19 cl, 21 dwg
