WO2019090498A1

WO2019090498A1 - Fingerprint unlock method and fingerprint unlock system of intelligent terminal

Info

Publication number: WO2019090498A1
Application number: PCT/CN2017/109859
Authority: WO
Inventors: 辛弦
Original assignee: 深圳传音通讯有限公司
Priority date: 2017-11-08
Filing date: 2017-11-08
Publication date: 2019-05-16

Abstract

A fingerprint unlock method and fingerprint unlock system of an intelligent terminal. The method comprises the following steps: recognizing fingerprint information input in an intelligent terminal; matching the fingerprint information; counting times of matching failure of the fingerprint information; and when the times of matching failure of the fingerprint information is greater than a first preset threshold, closing the fingerprint unlock system of the intelligent terminal. According to the fingerprint unlock method and fingerprint unlock system of an intelligent terminal, a first preset threshold is set in the intelligent terminal, and thus when persons or users other than a specific user fail to unlock the intelligent terminal by means of fingerprint information for many times, the intelligent terminal will automatically close the fingerprint unlock system thereof, thereby reducing power consumption of the intelligent terminal by misoperations of the user.

Description

Fingerprint unlocking method and fingerprint unlocking system of intelligent terminal

Technical field

The invention relates to the technical field of fingerprint unlocking of a smart terminal, in particular to a fingerprint unlocking method and a fingerprint unlocking system of the smart terminal.

Background technique

With the development and advancement of technology, the development of intelligent terminals is changing with each passing day. Because of its convenience and functionality, intelligent terminals have gradually penetrated into all aspects of people's lives and become an indispensable auxiliary equipment in people's lives. In particular, as smart terminals can realize communication connections with each other by means of network technology, the intelligence and convenience of the smart terminals are greatly improved, and are favored by users. For example, the development of communication or information media such as WeChat and Weibo has changed the traditional way of information exchange and communication.

The fingerprint, the English name is fingerprint, the two fingerprints often have the same overall characteristics, but their details are not exactly the same. Fingerprint lines are not continuous, smooth and straight, but often break, fork or turn. These breakpoints, bifurcation points, and turning points are referred to as "feature points." The feature points provide confirmation information about the uniqueness of the fingerprint, the most typical of which are the endpoints and the bifurcation points, and others include divergence points, isolated points, ring points, short lines, and the like. The parameters of the feature points include the direction (the node can be oriented in a certain direction), the curvature (the speed at which the direction of the grain changes), and the position (the position of the node is described by the x/y coordinates, which may be absolute or relative to the triangle Point or feature point). The unique characteristics of the fingerprint make the fingerprint information widely used as a protection password. In particular, with the development of fingerprint recognition technology, fingerprint recognition, as an unlocking password and a protection password of an intelligent terminal, can effectively protect data security of electronic devices such as smart terminals, and has been widely used. At the same time, due to the accuracy and speed of fingerprint recognition technology, it brings a good user experience and is favored by users.

However, in the prior art, when a person other than the user touches the fingerprint button of the smart terminal multiple times in the smart terminal, or the fingerprint changes due to injury or other conditions, the fingerprint button of the smart terminal is touched multiple times, although not The smart terminal is unlocked, but the multiple touches cause the fingerprint recognition module in the smart terminal to work continuously, and also accelerate the rapid consumption of the power in the smart terminal, and affect the working life of the fingerprint recognition module in the smart terminal.

Summary of the invention

To solve the above problem, the present invention provides a fingerprint unlocking method and a fingerprint unlocking system for an intelligent terminal. The invention utilizes setting a first preset threshold in the smart terminal. After the user or the user other than the user fails to unlock the smart terminal through the fingerprint information multiple times, the smart terminal automatically closes the fingerprint unlocking system, thereby reducing the user's misoperation and the like. At the same time, the present invention also sets a second preset threshold, which can record the time and the number of times the fingerprint is input when the number of fingerprint unlocking failures exceeds the second preset threshold, and has notified another person to attempt to obtain intelligence through fingerprint unlocking. Terminal information, or provide fingerprint unlocking failure data for user maintenance and other reference.

Specifically, a method for unlocking a fingerprint of a smart terminal includes the following steps: identifying fingerprint information input to the smart terminal, matching the fingerprint information, and counting the number of times the fingerprint information fails to match, when the fingerprint information fails to match When the number of times is greater than a first preset threshold, the fingerprint unlocking system of the smart terminal is closed.

Preferably, the step of identifying the fingerprint information input to the smart terminal comprises: collecting a fingerprint image, pre-processing the fingerprint image, and extracting the fingerprint feature from the pre-processed image.

Preferably, the step of matching the fingerprint information comprises: comparing the fingerprint information with the pre-stored fingerprint information, and determining the fingerprint information when the similarity between the fingerprint information and the pre-stored fingerprint information is less than a deviation threshold. Pre-stored fingerprint information failed to match.

Preferably, the method further includes: when the number of times the fingerprint information fails to match is greater than a second preset threshold, reading the time, the number of times, and the fingerprint information input each time, and the time And the number of times and the fingerprint information input each time are associated and stored in the smart terminal, wherein the second preset threshold is smaller than the first preset threshold.

Preferably, the method further includes: when the number of times the fingerprint information fails to be matched is greater than a second preset threshold, extracting an information module from the smart terminal, and sending an information including inputting the fingerprint information according to the template. The time, the number of times, and the information of the fingerprint information entered each time.

Another aspect of the present invention is to provide a fingerprint unlocking system for an intelligent terminal, comprising the following module, a fingerprint identification module, identifying fingerprint information input to the intelligent terminal, detecting a module, matching the fingerprint information, and a statistical module, and counting the statistics The number of times the fingerprint information is matched fails, and the control module closes the fingerprint unlocking system of the smart terminal when the number of times the fingerprint information fails to match is greater than a first preset threshold.

Preferably, the fingerprint identification module includes: an acquisition unit that collects a fingerprint image, a pre-processing unit that performs pre-processing on the fingerprint image, and a feature extraction unit that extracts fingerprint features from the pre-processed image.

Preferably, the detecting module includes: a comparing unit, comparing the fingerprint information with the pre-stored fingerprint information, and determining, by the determining unit, when the similarity between the fingerprint information and the pre-stored fingerprint information is less than a deviation threshold, determining the fingerprint information Matching with pre-stored fingerprint information failed.

Preferably, the system further includes: a recording module, when the number of times the fingerprint information fails to match is greater than a second When the threshold is preset, the time, the number of times, and the fingerprint information input each time are recorded, and the storage module is associated with the time, the number of times, and the fingerprint information input each time and stored in the smart terminal. The second preset threshold is smaller than the first preset threshold.

Preferably, the system further includes a retrieval module, when the number of times the fingerprint information fails to be matched is greater than a second predetermined threshold, an information module is extracted from the intelligent terminal, and the information module sends an inclusion according to the template. The time, the number of times the fingerprint information is input, and the information of the fingerprint information input each time.

Compared with the prior art, the technical advantages of the present invention are:

1) The present invention utilizes a first preset threshold in a smart terminal. When a person or a user other than the user fails to unlock the smart terminal through the fingerprint information multiple times, the smart terminal automatically turns off the fingerprint unlocking system, thereby reducing user misoperation, etc. Consumption of the power of the smart terminal;

2) At the same time, the present invention further sets a second preset threshold, which can record the time and the number of times the fingerprint is input when the number of fingerprint unlocking failures exceeds the second preset threshold, and has notified another person to attempt to obtain the intelligent terminal information through fingerprint unlocking. Or provide fingerprint unlock failure data for user maintenance and other reference.

DRAWINGS

1 is a schematic flow chart of a fingerprint unlocking method of a smart terminal according to a preferred embodiment of the present invention;

2 is a flow chart showing a step of preferably identifying fingerprint information of an input smart terminal in accordance with FIG. 1;

3 is a flow chart showing a step of preferably matching the fingerprint information in FIG. 1;

4 is a schematic flow chart of a step of alerting a smart terminal according to a fingerprint unlocking condition in FIG. 1;

5 is a schematic flow chart of a step of alerting a smart terminal according to a fingerprint unlocking condition in FIG. 1;

FIG. 6 is a structural diagram of a fingerprint unlocking system of a smart terminal according to a preferred embodiment of the present invention.

Detailed ways

Advantages of the present invention will be described in detail below with reference to specific embodiments.

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with aspects of the present disclosure as detailed in the appended claims.

The terms used in the present disclosure are for the purpose of describing particular embodiments only, and are not intended to limit the disclosure. In The singular forms "a", "the" and "the" It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information may also be referred to as second information without departing from the scope of the present disclosure. Similarly, the second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determination"

In the following description, the use of suffixes such as "module", "component" or "unit" for indicating an element is merely an explanation for facilitating the present invention, and does not have a specific meaning per se. Therefore, "module" and "component" can be used in combination.

In the prior art, when a person other than the user touches the fingerprint button of the smart terminal multiple times in the smart terminal, or the fingerprint changes due to injury or other conditions, the fingerprint button of the smart terminal is touched multiple times, although the smart terminal cannot be used. Unlocking, but multiple touches cause the fingerprint recognition module in the smart terminal to work continuously, and also accelerate the rapid consumption of power in the smart terminal, and affect the working life of the fingerprint recognition module in the smart terminal.

To solve the above problem, the present invention provides a method for unlocking a fingerprint of an intelligent terminal. 1 is a schematic flowchart of a fingerprint unlocking method of a smart terminal according to a preferred embodiment of the present invention. As shown in the figure, in the embodiment, the method for unlocking the fingerprint of the smart terminal provided includes the following steps: S1, identifying fingerprint information of the input smart terminal; S2, matching the fingerprint information; S3, counting the fingerprint The number of times the information matching fails; S4, when the number of times the fingerprint information fails to match is greater than a first preset threshold, the fingerprint unlocking system of the smart terminal is closed.

The method steps of the present invention are explained in detail below in conjunction with specific embodiments:

S1, identifying fingerprint information of the input smart terminal

In this embodiment, the user can unlock the smart terminal by entering the fingerprint information directly in the smart terminal, and enter the universal operation interface of the smart terminal. Specifically, the user may input a fingerprint information, that is, a fingerprint image, to the smart terminal by touching a fingerprint key on the smart terminal.

Specifically, referring to FIG. 2, it is a schematic flowchart of a step corresponding to the fingerprint information of the input smart terminal in FIG. As shown in the figure, in the embodiment, the step of identifying the fingerprint information input to the smart terminal includes:

- Capture fingerprint images:

When the user presses the fingerprint collection function key on the smart terminal, the fingerprint sensor in the smart terminal collects fingerprint information of the user. According to the different collection methods, the fingerprint sensor is mainly divided into two types: wipe type and push type. The principle of signal acquisition is currently optical, pressure sensitive, capacitive, inductive, thermal and ultrasonic, and fingerprint images can be obtained by scanners, digital cameras, and the like. Preferably, in this embodiment, a capacitive fingerprint sensor is employed.

The fingerprint sensor can detect a change in capacitance caused by the proximity of the user and provide a digital output.

The method for obtaining a fingerprint image by the fingerprint wireless sensor includes:

1. sequentially capturing fingerprint image strips by fingerprint wireless sensors;

2. The fingerprint wireless sensor divides the scanned fingerprint image strip into predetermined segments;

3. Detecting the best overlap area by comparing each image strip and its segments to the next image strip;

4. Calculate the average of the average image transitions through the overlap region;

5. Mix the entire image to which the average image transition value is applied to each image strip.

The method of obtaining fingerprints by such a sensor greatly improves the correct recognition rate by accurately estimating and compensating the image scanned by the fingerprint sensor, and accurately restores the image to the original image.

- Pre-processing the captured fingerprint image

Fingerprint image processing: including fingerprint area detection, image quality judgment, direction and frequency estimation, image enhancement, fingerprint image binarization and refinement. Preprocessing refers to the processing of fingerprint images containing noise and pseudo features by a certain algorithm, so that the structure of the lines is clear and the feature information is prominent. Its purpose is to improve the quality of fingerprint images and improve the accuracy of feature extraction. Generally, the preprocessing process includes normalization, image segmentation, enhancement, binarization, and refinement, but the steps of preprocessing are also different depending on the specific situation.

- Obtain ridge data from the fingerprint from the pre-processed image

- fingerprint feature extraction

The fingerprint morphological features include the center (upper and lower) and the triangular point (left and right). The detailed feature points of the fingerprint mainly include the starting point, the ending point, the combining point and the bifurcation point of the ridge. Extract the feature point information (endpoint, bifurcation point...) of the fingerprint from the pre-processed image. The information mainly includes parameters such as type, coordinates, and direction. The detailed features in the fingerprint usually include endpoints, bifurcation points, isolated points, short forks, rings, and so on. The line endpoints and bifurcation points have the most chance, the most stable, and easy to acquire in the fingerprint.

S2, matching the fingerprint information

Fingerprint matching is to compare the fingerprint features collected in the field with the fingerprint features stored in the fingerprint database to determine whether they belong to the same fingerprint. The rough matching can be performed according to the pattern of the fingerprint, and then the fingerprint shape and the detail feature are used to accurately match, and the similarity scores of the two fingerprints are given. The similarity scores of the fingerprints are sorted according to the application or whether the judgment result of the same fingerprint is given.

There are two ways to compare fingerprints: 1) One-to-one comparison: the user fingerprints to be compared are retrieved from the fingerprint database according to the user ID, and then compared with the newly collected fingerprints; 2) One-to-many comparison: newly acquired Fingerprints and all fingerprints in the fingerprint library A comparison.

Preferably, referring to FIG. 3, it is a schematic flowchart of a step of preferably matching the fingerprint information in FIG. As can be seen from the figure, in the embodiment, the proposed step of matching the fingerprint information mainly includes:

- comparing the fingerprint information with pre-stored fingerprint information

In this embodiment, the fingerprint information of the user is collected and stored in the smart terminal. It should be understood that the user is not limited to one person and may be a plurality of people authorized to use the smart terminal. After the fingerprint information is collected, the fingerprint features included in the currently collected fingerprint information are one-to-one or one-to-many, and the fingerprint information stored in the smart terminal is included in the fingerprint information. Fingerprint features are compared and matched.

- when the similarity between the fingerprint information and the pre-stored fingerprint information is less than a deviation threshold

In this embodiment, when the comparison result is that the currently collected fingerprint information is pre-stored fingerprint information of a user, that is, when the similarity between the fingerprint information and the standard fingerprint information is greater than a pre-stored deviation threshold, When the instruction of the smart terminal is started, the smart terminal may receive the instruction and successfully unlock the smart terminal; and when the similarity between the fingerprint information and the standard fingerprint information is less than a pre-stored deviation threshold, Send matching results out.

- determining that the fingerprint information matches the pre-stored fingerprint information

In this embodiment, the smart terminal may determine that the fingerprint information fails to match the pre-stored fingerprint information according to the matching result.

S3. Counting the number of times the fingerprint information fails to match.

With reference to FIG. 1 , in the embodiment, when the matching result of the fingerprint information is that the matching fails, the smart terminal records the time of entering the fingerprint information, the number of matching failures, and the fingerprint image represented by the fingerprint information. And cached with the smart terminal.

S4. When the number of times the fingerprint information fails to be matched is greater than a first preset threshold, the fingerprint unlocking system of the smart terminal is closed.

With reference to FIG. 1 , in the embodiment, when the number of times the fingerprint information fails to match is greater than a first preset threshold, the smart terminal generates a control command, and closes the smart terminal according to the control instruction. Fingerprint unlock system. Therefore, the user or the other person is prevented from repeatedly triggering the fingerprint button of the smart terminal, which causes the fingerprint unlocking system to continue working to waste the power of the smart terminal.

In addition, in this embodiment, when the fingerprint recognition system of the fingerprint terminal is damaged or the like, the fingerprint information of the user cannot be read normally, and the smart terminal cannot be unlocked normally. The present invention also provides a statistical and storage intelligence. The fingerprint matching situation of the terminal and the technical solution of the fingerprint information. For details, refer to FIG. 4 , which is a schematic flowchart of a step of accurately counting and storing the fingerprint matching situation and fingerprint information of the smart terminal according to FIG. 1 . D It can be seen that, in this embodiment, the steps of collecting and storing the fingerprint matching situation and the fingerprint information of the smart terminal mainly include:

- when the number of times the fingerprint information fails to match is greater than a second preset threshold, the time, the number of times, and the fingerprint information input each time are input.

In this embodiment, when the user inputs the fingerprint information of the smart terminal and the preset fingerprint information fails to match multiple times, and the number of matching failures is greater than a second preset threshold, the second preset threshold is smaller than the second preset threshold. The first preset threshold, the smart terminal will read the time and the number of times the fingerprint information is input into the buffer area and the fingerprint area in the smart terminal, and the fingerprint information input each time.

- associating and storing the time, number of times, and fingerprint information entered each time in the smart terminal

In this embodiment, the read cache is associated with the time, the number of times, and the fingerprint information input by the buffer area in the smart terminal in the cache area, and is associated with each other, and is stored in the cache. In the smart terminal.

In addition, in this embodiment, when the fingerprint recognition system of the fingerprint terminal is damaged or the like, the fingerprint information of the user cannot be read normally, and the smart terminal cannot be unlocked normally; or someone other than the user intends to impersonate The case where the user's fingerprint information acquires the operation authority of the smart terminal. The invention also provides a technical solution for alerting a smart terminal according to the fingerprint unlocking situation.

Referring to FIG. 5, it is a schematic flowchart of a step of alerting the smart terminal according to the fingerprint unlocking condition in FIG. As can be seen from the figure, in the embodiment, the step of providing an alarm to the smart terminal according to the fingerprint unlocking situation includes:

Extracting an information template from the smart terminal when the number of times the fingerprint information fails to match is greater than a second preset threshold;

In this embodiment, when the smart terminal recognizes that the fingerprint information of the smart terminal and the pre-stored fingerprint information fails to match, the number of times that the matching fails is greater than a second preset threshold, where the second preset threshold is smaller than the first preset When the threshold is set, the smart terminal further extracts an information template from the smart terminal.

- Sending, based on the template, a message containing the time, the number of times the fingerprint information was input, and the fingerprint information entered each time.

In this embodiment, further, the smart terminal may send out, according to the template, information including a time, a number of times, and a fingerprint information input each time. For example, the current smart terminal X-time fingerprint unlocking fails, and the specific time of unlocking is: XX, etc.

Preferably, in this embodiment, the user may also send a voice message, a light message, and the like through the smart terminal according to the information template.

In summary, the present invention provides a method for unlocking a fingerprint of an intelligent terminal. The invention utilizes setting a first preset threshold in the smart terminal. After the user or the user other than the user fails to unlock the smart terminal through the fingerprint information multiple times, the smart terminal automatically closes the fingerprint unlocking system, thereby reducing the user's misoperation and the like. At the same time, the present invention also sets a second preset threshold, which can record the time and the number of times the fingerprint is input when the number of fingerprint unlocking failures exceeds the second preset threshold, and has notified another person to attempt to obtain intelligence through fingerprint unlocking. Terminal information, or provide fingerprint unlocking failure data for user maintenance and other reference.

Another aspect of the present invention is to provide a fingerprint unlocking system for a smart terminal. Referring to FIG. 6, FIG. 6 is a structural diagram of a fingerprint unlocking system of a smart terminal according to a preferred embodiment of the present invention. As can be seen from the figure, the fingerprint unlocking system of the smart terminal provided by this embodiment includes the following modules or units:

- fingerprint identification module

It is used to identify the fingerprint information of the input smart terminal. Specifically, the fingerprint identification module includes

The acquisition unit collects fingerprint images. The acquisition unit includes a fingerprint sensor. When the user presses the fingerprint collection function key on the smart terminal, the fingerprint sensor in the smart terminal collects fingerprint information of the user. According to the different collection methods, the fingerprint sensors are mainly divided into two types: scratch type and push type. According to the principle of signal acquisition, there are optical, pressure sensitive, capacitive, inductive, thermal and ultrasonic, etc. The fingerprint image is obtained by a scanner, a digital camera, or the like.

Preferably, in this embodiment, a capacitive fingerprint sensor is employed. The fingerprint sensor can detect a change in capacitance caused by the proximity of the user and provide a digital output.

a preprocessing unit that preprocesses the fingerprint image.

The feature extraction unit acquires ridge line data of the fingerprint from the preprocessed image, and extracts the fingerprint feature.

-Detection module

Used to match the fingerprint information. The detection module includes:

Comparing the fingerprint information with the pre-stored fingerprint information,

a determining unit, when the similarity between the fingerprint information and the pre-stored fingerprint information is less than a deviation threshold,

It is determined that the fingerprint information fails to match the pre-stored fingerprint information.

-Statistics module

Used to count the number of times the fingerprint information fails to match.

-Control module

When the number of times the fingerprint information fails to match is greater than a first preset threshold, the method is used to control the fingerprint unlocking system of the smart terminal.

In addition, in this embodiment, when the fingerprint recognition system of the fingerprint terminal is damaged or the like, it may also cause The fingerprint information of the user cannot be read normally, so that the smart terminal cannot be unlocked normally. The present invention also provides a technical solution for collecting and storing the fingerprint matching situation of the smart terminal and the fingerprint information. Therefore, based on the above embodiment, the fingerprint unlocking system of the smart terminal further includes

a recording module, when the number of times the fingerprint information fails to be matched is greater than a second preset threshold, recording a time, a number of times, and a fingerprint information input each time, wherein the second preset threshold is smaller than Describe a first preset threshold;

The module is stored, and the time, the number of times, and the fingerprint information input each time are associated and stored in the smart terminal.

In addition, in this embodiment, when the fingerprint recognition system of the fingerprint terminal is damaged or the like, the fingerprint information of the user cannot be read normally, and the smart terminal cannot be unlocked normally; or someone other than the user intends to impersonate The case where the user's fingerprint information acquires the operation authority of the smart terminal. The invention also provides a technical solution for alerting a smart terminal according to the fingerprint unlocking situation. Therefore, based on the above embodiment, the fingerprint unlocking system of the smart terminal further includes

a retrieval module, when the number of times the fingerprint information fails to match is greater than a second preset threshold, extracting an information module from the smart terminal;

The information module sends out, according to the template, information including a time, a number of times of inputting the fingerprint information, and fingerprint information input each time.

In summary, the present invention provides a fingerprint unlocking system for an intelligent terminal. The invention utilizes setting a first preset threshold in the smart terminal. After the user or the user other than the user fails to unlock the smart terminal through the fingerprint information multiple times, the smart terminal automatically closes the fingerprint unlocking system, thereby reducing the user's misoperation and the like. At the same time, the present invention also sets a second preset threshold, which can record the time and the number of times the fingerprint is input when the number of fingerprint unlocking failures exceeds the second preset threshold, and has notified another person to attempt to obtain intelligence through fingerprint unlocking. Terminal information, or provide fingerprint unlocking failure data for user maintenance and other reference.

It should be noted that the embodiments of the present invention are preferred embodiments, and are not intended to limit the scope of the present invention. Any one skilled in the art may use the above-disclosed technical contents to change or modify the equivalent embodiments. Any modification or equivalent changes and modifications of the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the technical solutions of the present invention.

Claims

A method for unlocking a fingerprint of a smart terminal, comprising the steps of:

Identify the fingerprint information of the input smart terminal,

Matching the fingerprint information,

Counting the number of times the fingerprint information matches fails,

When the number of times the fingerprint information fails to match is greater than a first preset threshold,

The fingerprint unlocking system of the smart terminal is closed.
The method of claim 1 wherein

The step of identifying the fingerprint information input to the smart terminal includes,

Collect fingerprint images,

Preprocessing the fingerprint image,

Fingerprint features are extracted from the preprocessed image.
The method of claim 1 wherein

The step of matching the fingerprint information includes:

Comparing the fingerprint information with the pre-stored fingerprint information,

When the similarity between the fingerprint information and the pre-stored fingerprint information is less than a deviation threshold,

It is determined that the fingerprint information fails to match the pre-stored fingerprint information.
The method of claim 1 wherein

Also includes,

When the number of times the fingerprint information fails to match is greater than a second preset threshold,

Reading the time, the number of times the fingerprint information is input, and the fingerprint information input each time,

And associating and storing the time, the number of times, and the fingerprint information input each time in the smart terminal,

The second preset threshold is smaller than the first preset threshold.
The method of claim 4 wherein:

Also includes,

When the number of times the fingerprint information fails to match is greater than a second preset threshold,

Extracting an information module from the smart terminal,

Sending, according to the template, a message including the time, the number of times, and the fingerprint information input each time the fingerprint information is input.
A fingerprint unlocking system for a smart terminal, comprising the following modules,

a fingerprint identification module that recognizes fingerprint information input to the smart terminal,

a detection module that matches the fingerprint information,

The statistics module collects statistics on the number of failed fingerprint information matching,

And the control module is configured to: when the number of times the fingerprint information fails to be matched is greater than a first preset threshold, the fingerprint unlocking system of the smart terminal is closed.
The fingerprint unlocking system of claim 6 wherein:

The fingerprint identification module includes

Acquisition unit, collecting fingerprint images,

a preprocessing unit that preprocesses the fingerprint image,

The feature extraction unit extracts fingerprint features from the preprocessed image.
The fingerprint unlocking system of claim 6 wherein:

The detecting module includes

Comparing the fingerprint information with the pre-stored fingerprint information,

a determining unit, when the similarity between the fingerprint information and the pre-stored fingerprint information is less than a deviation threshold,

It is determined that the fingerprint information fails to match the pre-stored fingerprint information.
The fingerprint unlocking system of claim 6 wherein:

Also includes,

a recording module, when the number of times the fingerprint information fails to match is greater than a second preset threshold, recording the time, the number of times, and the fingerprint information input each time,

Storing the module, and associating the time, the number of times, and the fingerprint information input each time in the smart terminal,

The second preset threshold is smaller than the first preset threshold.
The fingerprint unlocking system of claim 9 wherein:

Also includes

a retrieval module, when the number of times the fingerprint information fails to match is greater than a second preset threshold, extracting an information module from the smart terminal,

The information module sends out, according to the template, information including a time, a number of times of inputting the fingerprint information, and fingerprint information input each time.