WO2017132822A1

WO2017132822A1 - Fingerprint recognition system for portable electronic device

Info

Publication number: WO2017132822A1
Application number: PCT/CN2016/073154
Authority: WO
Inventors: 刘文桂; 刘兆轩; 刘友淳
Original assignee: 刘文桂; 刘兆轩; 刘友淳
Priority date: 2016-02-02
Filing date: 2016-02-02
Publication date: 2017-08-10

Abstract

A fingerprint recognition system (1) for a portable electronic device. The fingerprint recognition system (1) comprises a database (2), a detection unit (3), and a processing unit (4). The database (2) and the detection unit (3) are electrically connected to the processing unit (4), and the database (2) is pre-stored with a comparison data module (6). The comparison data module (6) comprises multiple fingerprint feature data items (61) and multiple finger joint feature data items (62) of three pre-determined finger portions. The detection unit (3) is used to perform detection on three finger portions (8) to be verified to obtain multiple fingerprints (81) to be verified and multiple finger joint prints (83) to be verified, and send a signal to the processing unit (4). The processing unit (4) receives the signal, converts the same into a current data module (7), and compares the current data module (7) with the comparison data module (6) to obtain a verification matching ratio. The processing unit (4) has a default predetermined matching ratio, and if the verification matching ratio is greater than or equal to the predetermined matching ratio, then the processing unit (4) determines that the three finger portions (8) match the three predetermined finger portions. The system (1) can solve the problem in which recognition cannot be performed after a finger is injured.

Description

Fingerprint identification system for portable electronic devices

Technical field

The invention relates to a fingerprint identification system, and in particular to a fingerprint identification system for a portable electronic device.

Background technique

Everyone has a different biological characteristics, such as fingerprints, face or iris, and so on. Therefore, compared with the traditional password lock or ID card, it is lost, forgotten or stolen. The use of biometrics to identify identity has a high degree of security and discrimination. Nowadays, people rely heavily on electronic products (such as mobile phones, tablet computers, and laptops). Electronic products often store private files or data. Therefore, in order to enhance security, in recent years, operators have also added biometrics to electronic products, such as The fingerprint identification system disclosed in Taiwan Patent No. I492119 and M504287, etc., belongs to this category.

In the commonly used fingerprint identification system, most of the fingerprints on a single finger are logged into the database, so once the fingerprint used for identification is damaged (such as a finger injury), it cannot be identified. In order to solve the above problem, in TW201528120, the fingerprint of 10 fingers is used instead, and one finger is used as the main identification, and the other 9 fingers are used as the backup identification method to solve the problem.

However, this method only recognizes the fingerprint block of the finger portion, and the security is low. In addition, instead of storing multiple sets of different fingerprints in the database, it will lead to more opportunities for different fingerprint samples to be used, and fake fingerprints can be used to log in, which increases the security of electronic products. Risks, there are shortcomings that need to be improved.

Therefore, it is necessary to provide a novel and progressive fingerprint identification system for portable electronic devices to solve the above problems.

Summary of the invention

The main object of the present invention is to provide a fingerprint identification system for a portable electronic device. When a finger is recognized by an operator and a part of the finger is injured, fingerprint recognition can still be performed to solve the problem that the finger cannot be recognized after a long finger injury. And, a variety of combinations of modes are available for high security.

To achieve the above objective, the present invention provides a fingerprint identification system for a portable electronic device, comprising a database, a detecting unit and a processing unit. The database and the detecting unit are respectively electrically connected to the processing unit, and the database is pre-stored with a comparison data module, where the matching data module includes multiple fingerprint feature data of three default fingers and complex knuckle feature data, and the detecting unit For the detection of the three pending test parts Counting the fingerprint and the plurality of pending knuckles, and transmitting a signal to the processing unit, the processing unit receives the signal and converts it into a real-time data module, and the processing unit compares the real-time data module with the comparison data module Right and get a verification match rate. The processing unit has a default matching rate by default. When the verification matching rate is greater than or equal to the preset matching rate, the processing unit determines that the three pending detecting portions are consistent with the three preset fingers.

DRAWINGS

1 is a block diagram of a component relationship in accordance with a preferred embodiment of the present invention.

2 is a schematic diagram of an identification process according to a preferred embodiment of the present invention.

FIG. 3 is a first schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.

Figure 4 is a diagram showing the state of use of a preferred embodiment of the present invention.

FIG. 5 is a second schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.

FIG. 6 is a third schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.

FIG. 7 is a fourth schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.

FIG. 8 is a fifth schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.

In the picture:

1: fingerprint identification system; 74: fourth feature module to be tested;

2: database; 75: fifth feature module to be tested;

3: detecting unit; 76: sixth feature module to be tested;

4: processing unit; 77: seventh feature module to be tested;

5: portable electronic device; 78: eighth feature module to be tested;

6: comparison data module; 8: pending finger;

61: a first comparison feature module; 81: a fingerprint to be tested;

62: second comparison feature module; 82: pending phalanx;

63: a third comparison feature module; 83: a finger knuckle to be examined;

64: fourth control feature module; 84: finger joint to be tested;

65: fifth control feature module; 9: baseline to be tested;

66: sixth control feature module; α: angle to be tested;

67: seventh comparison feature module; A: polygon to be inspected;

68: eighth comparison feature module; b1: first waiting distance;

7: real-time data module; b2: second waiting distance;

71: a first feature to be tested; c1: a first distance to be inspected;

72: a second feature to be tested; c2: a second distance to be inspected;

73: a third feature to be tested; c3: a third distance to be inspected.

detailed description

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the present invention.

Referring to FIG. 1 to FIG. 4, a fingerprint identification system 1 of a portable electronic device 5 of the present invention includes a database 2, a detecting unit 3 and a processing unit 4.

The database 2 and the detecting unit 3 are electrically connected to the processing unit 4, respectively. The database 2 is pre-stored with a comparison data module 6, and the comparison data module 6 includes complex fingerprint feature data of three default fingers (not shown). And the plurality of knuckle feature data, the detecting unit 3 is configured to detect the plurality of pending fingerprints 81 and the plurality of pending knuckles 82 of the three pending finger portions 8 and transmit a signal to the processing unit 4, and the processing unit 4 receives The signal is then converted into a real-time data module 7, which compares the real-time data module 7 with the comparison data module 6 and obtains a verification match rate. The processing unit 4 has a default matching rate by default. When the verification matching rate is greater than or equal to the preset matching rate, the processing unit 4 determines that the three pending finger portions 8 match the three preset fingers. The fingerprint identification system 1 can be used to perform operation locking on the portable electronic device 5, such as unlocking an operation screen, unlocking a case file, and the like, thereby providing more comprehensive protection of more important electronic data.

In addition, it is considered that the operator's three test finger portions 8 sometimes cause problems in that the verification is inconvenient due to injury/dirt (for example, the fingerprint is damaged), and at the same time, there is a high verification safety reliability; It is recommended that the preset coincidence rate range is preferably defined in the range of 70% to 90%. In this embodiment, the preset coincidence rate is set to 80%, and the identification convenience and the identification security can be simultaneously considered. It is worth mentioning that the three preset fingers are not limited to the operator's hands or feet, and are not limited to one hand/foot. In other words, the three preset fingers may have a plurality of combined modes; preferably, the three The preset finger and the three pending finger portions 8 are the index finger, the middle finger and the ring finger of the same hand, so that the user can perform the identification operation with the portable electronic device 5 (refer to FIG. 4).

For further explanation of the identification process, the comparison data module 6 includes a first comparison feature module 61 and a second comparison feature module 62. The first comparison feature module 61 is defined as the complex fingerprint feature data of the three preset fingers. The second comparison feature module 62 is defined as a complex finger knuckle of the three preset fingers The data is exemplified, but not limited to, the shape of the knuckles, the number of main lines of the knuckles, the distribution of the knuckles on the knuckles, the length of each knuckles, and the like. It can be understood that the real-time data module 7 includes a first to-be-tested feature module 71 and a second to-be-tested feature module 72. The first to-be-tested feature module 71 is a plurality of pending verifications. The data of the fingerprint 81 is the data of the plurality of pending finger knuckles 83 of the three to-be-examined finger portions 8. Then, the processing unit 4 compares the first verification feature module 71 and the second verification feature module 72 with the first comparison feature module 61 and the second comparison feature module 62, respectively, and obtains a first verification conformance. Rate and a second verification match rate. The processing unit 4 determines that the three pending finger portions 8 match the three preset finger portions when at least one of the first verification compliance rate and the second verification compliance rate is greater than or equal to the preset compliance rate.

Preferably, the comparison data module 6 further includes a third comparison feature module 63. The third comparison feature module 63 is the two-finger feature data of the three preset fingers when straightening and closing, the real-time data module 7 In addition, a third feature module 73 is included. Similarly, the third feature module 73 is data of two pending finger joints 84 of the three pending finger portions 8 when straightened together. The processing unit 4 The third feature verification module 73 and the third comparison feature module 63 are compared, and a third verification compliance rate is obtained. And the processing unit 4 determines that the three verification fingers 8 are determined when the first verification compliance rate, the second verification compliance rate, and the third verification compliance rate are at least equal to or equal to the preset compliance rate. Corresponding to the three preset fingers, it is possible to perform the verification when the three test finger portions 8 are injured, and the identification safety can be not affected.

In another preferred embodiment, the comparison data module 6 further includes a fourth comparison feature module 64. The fourth comparison feature module 64 is a complex finger-strip relative position feature data of the three preset fingers when being straightened together. For example, but not limited to, the second knuckle position of the index finger is approximately the same as the second knuckle position of the middle finger, or the first knuckle of the ring finger is located in the first half of the finger joint and the like. Similarly, the real-time data module 7 further includes a fourth to-be-tested feature module 74, which is a plurality of pending finger-knobs 83 of the three-to-be-tested finger portion 8 when straightened together. The processing unit 4 compares the fourth verification feature module 74 and the fourth comparison feature module 64 with a relative position data, and obtains a fourth verification compliance rate. The processing unit 4 determines the three pending tests when at least two of the first verification compliance rate, the second verification compliance rate, the third verification compliance rate, and the fourth verification compliance rate are greater than or equal to the preset compliance rate. The finger 8 coincides with the three preset fingers.

It is worth mentioning that the operator can decide the first verification conformity rate, the second verification conformity rate, and the first The verification verification rate and the fourth verification conformity rate need to reach the preset compliance rate (for example, 2, 3 or 4), and then adjust the rigor of the processing unit 4 to judge the standard. For example, if the operator prefers the security level protection, the first verification compliance rate, the second verification compliance rate, the third verification compliance rate, and the fourth verification compliance rate may both be greater than or equal to the When the preset matching rate is reached, the processing unit 4 determines that the three pending finger portions 8 are consistent with the three preset finger portions, so as to achieve more stringent identification.

To be added, the comparison data module 6 can be further extended or set with other default identification data, and is not limited to the above.

For example, the three preset fingers and the three pending finger portions 8 respectively refer to the index finger, the middle finger and the ring finger of the same hand, and the comparison data module 6 further includes a fifth comparison feature module 65. When the default finger is straight and close, the fingerprint outline of the middle finger and the fingerprint outline of the index finger will have a first tangent, and the fingerprint outline of the middle finger and the fingerprint outline of the ring finger will have a second tangent, and the first tangent and the second tangent intersect to form. A preset angle (not shown), the fifth comparison feature module 65 is the data of the default angle.

The real-time data module 7 further includes a fifth feature module 75. Referring to FIG. 5, when the three-finger finger 8 is straight and close, the fingerprint contour of the middle finger and the fingerprint of the index finger have a first tangent, the middle finger The fingerprint contour and the fingerprint of the ring finger have a second tangent, and the first tangent and the second tangent intersect to form an inspected angle α, and the fifth inspected feature module 75 is the data of the inspected angle α. The processing unit 4 compares the fifth verification feature module 75 and the fifth comparison feature module 65, and obtains a fifth verification coincidence rate. The processing unit 4 determines that the three pending finger portions 8 match the three preset fingers when the fifth verification compliance rate is greater than or equal to the preset compliance rate.

Alternatively, the comparison data module 6 further includes a sixth comparison feature module 66. When the three default fingers are straight and close together, a predetermined baseline (not shown) is defined by the first knuckle of the middle finger. The distance of the knuckle of the first knuckle of the index finger from the default baseline is a first preset distance, and the distance of the knuckle position of the first knuckle of the ring finger is a second preset distance from the default baseline. The sixth comparison feature module 66 is the first default distance and the second default distance data.

The real-time data module 7 further includes a sixth feature module 76. Referring to FIG. 6, when the three-to-be-tested fingers 8 are straight and close together, a baseline of the first knuckle of the middle finger is defined. The distance of the phalanx of the first phalanx of the index finger from the baseline 9 to be examined is a first waiting distance b1, and the position of the knuckle of the first knuckle of the ring finger is a distance from the baseline 9 to be examined. The second to-be-tested feature module 76 is the first to-be-tested distance b1 and the second to-be-tested distance b2 data. The processing unit 4 The six test feature modules 76 and the sixth control feature module 66 are compared and a sixth verification match rate is obtained. The processing unit 4 determines that the three pending finger portions 8 match the three preset fingers when the sixth verification compliance rate is greater than or equal to the preset coincidence rate.

Alternatively, the comparison data module 6 further includes a seventh comparison feature module 67. When the three default fingers are straight and close together, the first knuckle of the middle finger and the knuckle of the second knuckle and the index finger The knuckle of the first knuckle and the knuckle of the first knuckle of the ring finger, the plurality of default feature points are taken out to form a preset polygon (not shown), and the seventh comparison feature module 67 is the data of the default polygon. . The real-time data module 7 further includes a seventh feature module 77. Referring to FIG. 7, when the three fingers 8 are straight and close together, the first knuckle of the middle finger and the knuckle of the second knuckle may be The knuckle of the first knuckle of the index finger and the knuckle of the first knuckle of the ring finger, and the plurality of feature points to be inspected are taken to form a to-be-conformed polygon A, and the seventh feature element 77 is the polygon to be inspected A's data. The processing unit 4 compares the seventh verification feature module 77 and the seventh comparison feature module 67, and obtains a seventh verification coincidence rate. When the seventh verification coincidence rate is greater than or equal to the preset coincidence rate, the processing unit 4 determines that the three pending verification finger portions 8 are consistent with the three preset finger portions.

The plurality of features to be tested in the present embodiment are the two ends of the phalanx of the first phalanx of the middle finger, the right end of the phalanx of the first phalanx of the index finger, and the knuckle of the first knuckle of the ring finger. The left end of the pattern, and the center point of the knuckle of the second phalanx of the middle finger, thereby forming a pentagon to be compared with the preset polygon, it being understood that the plural default feature points will also be the same s position.

Of course, it can also be set that the comparison data module 6 further includes an eighth comparison feature module 68. When the three default fingers are straight and close together, the distance between the knuckles of the first knuckle of the index finger and the fingertip of the index finger is defined. For a first specified distance, the distance between the knuckles of the first knuckle of the middle finger and the fingertip of the middle finger is a second specified distance, and the distance between the knuckles of the first knuckle of the ring finger to the fingertip of the ring finger is one. The third specified feature module 68 is data of the first specified distance, the second specified distance, and the third specified distance.

It can be understood that the real-time data module further includes an eighth feature module 78. Referring to FIG. 8, when the three test fingers 8 are straight and close together, the phalanx of the first knuckle of the index finger is defined to the index finger. The distance between the fingertips is a first to-be-specified distance c1, the distance between the phalanx of the first phalanx of the middle finger and the fingertip of the middle finger is a second to-be-specified distance c2, and the knuckle of the first knuckle of the ring finger The distance from the fingertip of the ring to the ring finger is a third to-be-specified distance c3, and the eighth feature to be tested 78 is the first to-be-specified distance c1, the second to-be-specified distance c2, and the third to-be-specified distance. C3 data. The processing unit 4 The levy module 78 and the eighth comparison feature module 68 perform an alignment and obtain an eighth verification compliant rate; wherein, when the eighth verification compliant rate is greater than or equal to the preset compliant rate, the processing unit 4 determines the three The finger to be tested 8 coincides with the three preset fingers.

In summary, the fingerprint identification system of the portable electronic device of the present invention performs a plurality of identification portions on the finger portion, so that a plurality of modes are combined to identify the problem, and the problem that the fingerprint recognition cannot be smoothly performed when the operator's finger is injured can be solved.

Moreover, whether the verification conformity rate of the various feature modules to be tested and the comparison feature module exceeds the preset coincidence rate and exceeds the preset coincidence rate is used for double comprehensive judgment, thereby improving safety. In addition, the operator can determine the amount of the preset compliance rate at his own discretion to determine the degree of rigor.

Claims

A fingerprint identification system for a portable electronic device, comprising: a database, a detecting unit and a processing unit, wherein the database and the detecting unit are electrically connected to the processing unit, and the database is pre-stored with a comparison a data module, the comparison data module includes a plurality of fingerprint fingerprint feature data of the default finger and a plurality of knuckle feature data, wherein the detecting unit is configured to detect the plurality of pending fingerprints and the plurality of pending knuckles of the three pending finger portions, and transmit the data a signal is sent to the processing unit, and the processing unit receives the signal and converts it into a real-time data module, and the processing unit compares the real-time data module with the comparison data module and obtains a verification conformance rate;

The processing unit has a default matching rate by default. When the verification matching rate is greater than or equal to the preset matching rate, the processing unit determines that the three pending detecting portions are consistent with the three preset fingers.
The fingerprint identification system of the portable electronic device of claim 1 , wherein the default coincidence rate is defined as 70% to 90%.
The fingerprint identification system of the portable electronic device of claim 1 , wherein the three default fingers and the three pending finger portions are the index finger, the middle finger and the ring finger of the same hand.
The fingerprint identification system of the portable electronic device of claim 1 , wherein the comparison data module comprises a first comparison feature module and a second comparison feature module, wherein the first comparison feature module is defined as the third a plurality of fingerprint feature data of the default finger, the second control feature module is defined as the complex finger texture feature data of the three default fingers; the real-time data module includes a first feature module to be tested and a second feature module to be tested The first feature to be tested is the data of the plurality of fingerprints to be inspected, and the second feature to be tested is the data of the plurality of fingerprints of the three to be inspected; the processing unit Comparing the first verification feature module and the second verification feature module with the first comparison feature module and the second comparison feature module, respectively, and obtaining a first verification compliance rate and a second verification compliance rate; wherein, When at least one of the first and second verification compliance rates is greater than or equal to the preset coincidence rate, the processing unit determines that the three pending verification fingers are consistent with the three preset fingers.
The fingerprint identification system of the portable electronic device of claim 4, wherein the comparison data module further comprises a third comparison feature module, wherein the third comparison feature module is the three presets when straight and close together The second finger joint feature data of the finger, the real-time data module further includes a third feature module to be inspected, wherein the third feature module is the data of the two pending finger joints of the three pending finger portions when straight and close together The processing unit compares the third feature to be tested and the third control feature module, and obtains a third Verifying the compliance rate; wherein, when the first verification compliance rate, the second verification compliance rate, and the third verification compliance rate are at least equal to or equal to the preset coincidence rate, the processing unit determines the three pending detection portions and The three preset fingers match.
The fingerprint identification system of the portable electronic device of claim 5, wherein the comparison data module further comprises a fourth comparison feature module, wherein the fourth comparison feature module is the three presets when straight and close together The complex number of the finger refers to the relative position feature data of the knuckle, and the real-time data module further includes a fourth feature module to be tested, wherein the fourth feature module to be tested is a plurality of pending test fingers of the three pending finger portions when straight and close together The relative position data of the knuckles, the processing unit compares the fourth verification feature module and the fourth comparison feature module, and obtains a fourth verification conformity rate; wherein, when the first verification conformity rate, the second When the verification compliance rate, the third verification compliance rate, and the fourth verification compliance rate are at least equal to or equal to the preset coincidence rate, the processing unit determines that the three pending verification fingers are consistent with the three preset finger portions.
The fingerprint identification system of the portable electronic device according to claim 6, wherein the default coincidence rate is defined as 80%, and the three preset fingers and the three pending finger portions are the same hand index finger, The middle finger and the ring finger, wherein the processing unit determines that the first verification rate, the second verification rate, the third verification rate, and the fourth verification rate are both greater than or equal to the preset rate of compliance The test finger is consistent with the three preset fingers.
The fingerprint identification system of the portable electronic device of claim 1 , wherein the three default fingers and the three pending finger portions respectively refer to the index finger, the middle finger and the ring finger of the same hand, and the comparison data module is further The fifth control feature module is included. When the three default fingers are straight and close together, the fingerprint contour of the middle finger and the fingerprint contour of the index finger will have a first tangent, and the fingerprint contour of the middle finger and the fingerprint contour of the ring finger will have a second tangent. The intersection of the all-line and the second tangential line further forms a preset angle, and the fifth comparison feature module is the data of the default angle; the real-time data module further includes a fifth verification feature module, the three-to-be-identified part When straight and close together, the fingerprint outline of the middle finger and the fingerprint outline of the index finger will have a first tangent, and the fingerprint outline of the middle finger and the fingerprint outline of the ring finger will have a second tangent, and the first tangent and the second tangent intersect to form a waiting line. An angle, the fifth feature module is the data of the angle to be verified; the processing unit compares the fifth feature module and the fifth control feature module, and Obtaining a fifth verification conformity rate; wherein, when the fifth verification coincidence rate is greater than or equal to the preset coincidence rate, the processing unit determines that the three pending verification fingers are consistent with the three preset finger portions.
The fingerprint identification system for a portable electronic device according to claim 1, wherein the three The default finger and the three pending finger portions respectively refer to the index finger, the middle finger and the ring finger of the same hand, and the control data module further includes a sixth control feature module, and the three default fingers define a preset baseline when they are straight and close together. Through the knuckle of the first knuckle of the middle finger, the distance of the knuckle position of the first knuckle of the index finger from the default baseline is a first preset distance, and the knuckle position of the first knuckle of the ring finger is away from the The default baseline distance is a second preset distance, the sixth comparison feature module is the first default distance and the second default distance data; the real-time data module further includes a sixth pending feature module, the three pending verification fingers When the parts are straight and close together, define a baseline of the first phalanx of the middle finger through the middle finger, and the distance of the phalanx of the first phalanx of the index finger from the baseline to be tested is a first waiting distance, the ring finger The distance between the knuckle of the first knuckle and the baseline to be inspected is a second waiting distance, and the sixth feature to be tested is the first to-be-tested distance and the second to-be-tested distance data; the processing unit The sixth feature module to be tested and The sixth comparison feature module performs an alignment, and obtains a sixth verification conformity rate; wherein, when the sixth verification coincidence rate is greater than or equal to the preset coincidence rate, the processing unit determines the three pending verification fingers and the third The preset fingers match.
The fingerprint identification system of the portable electronic device of claim 1 , wherein the three default fingers and the three pending finger portions respectively refer to the index finger, the middle finger and the ring finger of the same hand, and the comparison data module further The method includes a seventh control feature module, wherein the three default fingers are straight and close together, and the first knuckle of the middle finger and the knuckle of the second knuckle, the knuckle of the first knuckle of the index finger, and the ring finger a knuckle pattern of a knuckle, the plurality of default feature points are taken out to form a preset polygon, and the seventh comparison feature module is data of the default polygon; the real-time data module further includes a seventh feature module to be tested, the three When the finger to be examined is straight and close, the phalanx of the first and second knuckles of the middle finger, the knuckle of the first phalanx of the index finger, and the knuckle of the first knuckle of the ring finger can be taken out. The feature point further comprises a polygon to be inspected, wherein the seventh feature module is the data of the polygon to be inspected; the processing unit compares the seventh feature module and the seventh control feature module, and obtains One The verification unit meets the verification rate; wherein, when the seventh verification coincidence rate is greater than or equal to the preset coincidence rate, the processing unit determines that the three pending verification fingers are consistent with the three preset finger portions.
The fingerprint identification system of the portable electronic device of claim 1 , wherein the three default fingers and the three pending finger portions respectively refer to the index finger, the middle finger and the ring finger of the same hand, and the comparison data module further The eighth reference feature module is included. When the three default fingers are straight and close together, the distance between the knuckles of the first knuckle of the index finger and the fingertip of the index finger is defined as a first specified distance, and the first knuckle of the middle finger is The distance from the fingertip to the fingertip of the middle finger is a second specified distance, and the knuckle of the first knuckle of the ring finger to the ring finger The distance between the fingertips is a third specified distance, and the eighth comparison feature module is data of the first specified distance, the second specified distance, and the third specified distance; the real-time data module further includes an eighth feature module to be tested. When the three test fingers are straight and close together, the distance between the phalanx of the first phalanx of the index finger and the fingertip of the index finger is defined as a first specified distance, and the first finger of the middle finger is knuckled to the middle finger. The distance between the fingertips is a second distance to be inspected, and the distance between the knuckles of the first knuckles of the ring finger to the fingertips of the ring finger is a third waiting distance specified, and the eighth feature module is the first Data for a specified distance, a second specified distance, and a third specified distance; the processing unit compares the eighth feature and the eighth control feature module, and obtains an eighth verification The processing unit determines that the three pending finger portions match the three preset finger portions when the eighth verification compliance rate is greater than or equal to the preset compliance rate.