Anti-fraud early warning and intercepting system based on light guide interaction layer

Abstract

The invention discloses an anti-fraud early warning and intercepting system based on a light guide interaction layer, and relates to the field of intelligent terminal safety protection. The system comprises a light guide interaction layer, a coordinate mapping unit, a manager decision terminal and an early warning interception unit, and the light guide interaction layer is of a pure passive optical structure, does not contain electronic elements and comprises an array type light-induced deformation unit and an optical coding storage area; the optical coding storage area is of a pure passive structure and supports one-time storage or reconfigurable updating; the coordinate mapping unit realizes accurate mapping of screen coordinates and array indexes, and the whole process is pure optical logic and does not depend on electronic calculation; an encrypted fraud feature library is arranged in the supervisor decision-making terminal, interface recognition, fraud matching and instruction issuing are achieved, and system authority of the protected terminal and the Internet are not needed; the early warning interception unit drives the array type light-induced deformation unit to complete submillimeter-level accurate clicking, the response time is less than 5 ms, and fraud interception can be completed within 3 seconds. The method solves the problem that the existing fraud prevention technology depends on authority, is networked and is high in interception delay, adapts to fraud groups such as old people, can still realize real-time physical-level interception in an environment without network and authority, is safe in storage, is high in crowd adaptability, and can be widely applied to various terminal devices.

Description

Technical Field

[0001] This invention relates to the fields of smart terminal security protection and optical interaction control technology, specifically to a fraud prevention early warning and interception system based on a light guide interaction layer. It is suitable for vulnerable groups such as the elderly, and can achieve real-time identification and physical-level interception of fraudulent information without the need for the terminal to have system permissions or rely on the Internet or cellular network. Background Technology

[0002] Current fraud methods are becoming increasingly precise and scenario-based. Existing anti-fraud technologies have the following core flaws: they require terminal system permissions to intercept fraud, making them vulnerable to system restrictions or cracking; they rely on the internet to transmit fraud signature databases, rendering them ineffective in offline environments; they have high interception response delays, which can easily lead to users receiving fraudulent calls; and they have poor interface recognition adaptability for the elderly, resulting in high rates of missed reports and false positives.

[0003] Existing optical interaction technologies largely rely on electronic computing units for coordinate positioning and logic control, which cannot meet the needs of fraud prevention scenarios that require "no system permissions and no internet access." Therefore, there is an urgent need for a purely passive optical interaction architecture that can achieve real-time identification and physical-level interception of fraudulent information without requiring terminal system permissions or relying on the internet, adapting to the usage habits of the elderly, and solving the pain points of existing technologies. Summary of the Invention

[0004] I. Overall Architecture (Core Limitations) This system includes: a light guide interaction layer, a coordinate mapping unit, a supervisor decision-making terminal, an optical encoding storage area, and an early warning and interception unit. These units work together to achieve fraud information identification and physical-level interception without requiring system permissions or internet dependence. The entire process does not require system permissions on the protected terminal and does not rely on electronic computing or electronic storage units.

[0005] II. Core Technical Features (Disclosed in Modules) 1. Optical guide interaction layer (core execution unit)

[0006] The photoconductive interaction layer is mounted on the surface of the protected terminal screen. It is a purely passive optical structure without electronic components, including an array of photosensitive deformation units and an optical encoding storage area. The array of photosensitive deformation units uses piezoelectric ceramic materials with a response time of <5ms. This response time is deeply tied to the scenario requirements of sub-millimeter-level precise click capability and intercepting fraudulent calls within 3 seconds. Through the synergy of rapid response and precise positioning, it ensures the real-time performance and reliability of fraud interception, adapting to the core scenario requirements of fraud interception. The optical encoding storage area is a purely passive optical structure without electronic storage units, and it adopts two implementation methods, which can be selected according to the scenario requirements: Method 1: One-time optical encoding storage area, based on holographic grating to achieve fixed encoding storage, without the need for state switching; Method 2: Reconfigurable optical storage area, supporting the updating and adjustment of pre-authorized information. It can use photochromic materials or photorefractive crystals, which undergo reversible changes in optical properties under infrared light of a specific wavelength to realize the writing and erasing of binary information. The specific material selection and structural design are not the core innovation of this application, and those skilled in the art can implement them based on known optical storage technologies. 2. Coordinate Mapping Unit (Core Logic)

[0007] The coordinate mapping unit works in conjunction with the array unit of the light guide interaction layer to achieve precise mapping of screen coordinates, driving the array unit to complete sub-millimeter level precise clicks, meeting the real-time requirements of fraud interception; the coordinate mapping of this unit does not rely on electronic calculations, and is completed entirely through pure optical logic without the participation of electronic components, avoiding logical contradictions with the "pure optical architecture"; the specific implementation method of the coordinate mapping unit is not the core innovation of this application, and those skilled in the art can implement it using known optical or photoelectric conversion methods. 3. Chief Decision-Making Terminal (Core Control Unit)

[0008] The supervisor's decision-making terminal has a built-in encrypted fraud feature library (generated based on 12,000 fraud samples, covering mainstream fraud types such as impersonating public security, procuratorate and court officials, fake health investment, and fake prize winnings). Its core functions include: interface type recognition, fraud feature matching, and interception command issuance. The entire process does not require the system permissions of the protected terminal and does not rely on the Internet or cellular network of the protected terminal.

[0009] Interface type recognition: Collect the grayscale distribution characteristics of the screen interface and combine the relative grayscale difference of the interface area to achieve type recognition (avoiding the universality problem of absolute grayscale values). It can identify three core fraud interface types: incoming call interface, SMS interface, and link pop-up window, and adapt to the display differences of different terminals. Fraud feature matching: The built-in adaptive calibration mechanism adjusts the matching sensitivity based on pre-authorized population thresholds (teenagers, middle-aged, and elderly). The elderly threshold is optimized to 0.7 to ensure the identification suitability of the elderly population and reduce the risk of false negatives. Interception command issuance: Based on the recognition results, a physical interception command is issued to drive the array unit of the optical guide interaction layer to complete the precise click, thereby achieving real-time interception of fraudulent information. 4. Early warning and interception unit (execution terminal)

[0010] The early warning and interception unit receives the interception command from the supervisor's decision-making terminal and drives the array unit of the optical guide interaction layer to complete the precise click, realizing the real-time interception of fraudulent calls and text messages. The array unit adopts piezoelectric ceramic material with a response time of <5ms. This response time, combined with the sub-millimeter level precise click capability, can complete the rejection and interception within 3 seconds of the fraudulent call ringing, ensuring the real-time performance and accuracy of the interception, adapting to the scenario-based needs of fraud interception, and solving the pain points of high delay and easy false calls in existing technologies.

[0011] III. Examples Example 1: Fraud prevention and interception scenario among the elderly

[0012] The protected terminal is a senior-friendly mobile phone, which has no system permissions and does not rely on the Internet or cellular network; the optical guide interaction layer is attached to the surface of the screen of the senior-friendly mobile phone, and the optical coding storage area adopts the first method (one-time optical coding storage area), which is a pure passive structure and does not contain electronic storage units; the coordinate mapping unit realizes coordinate mapping based on the optical refraction path to complete sub-millimeter level precise clicks.

[0013] Test data: Based on 12,000 fraud samples, the error rate is less than 0.1%, the false alarm rate is 3.5%, and the false touch rate is 0.3%. It can block fraudulent calls within 3 seconds of the ringing of the phone, meeting the fraud protection needs of the elderly.

[0014] Comparative experiment: Based on the same 12,000 samples (consistent with the above, covering different groups of teenagers, middle-aged and elderly, including various types of fraud such as impersonating public security, procuratorate and court and fake health investment), the experiment was conducted in the same test environment, only the elderly threshold parameter was adjusted, and other conditions remained unchanged; if the elderly threshold was set to 0.8, the false negative rate increased from 3.5% to 12%, verifying the necessity of threshold optimization. Beneficial effects

[0015] 1. No permission dependency: No system permissions are required on the protected terminal throughout the process, making it suitable for scenarios with limited permissions, such as feature phones and closed system terminals, thus avoiding the risk of system restrictions; 2. Offline Adaptability: Pure passive optical architecture, does not rely on the Internet or cellular network, can still achieve fraud interception normally in offline environments, solving the pain point of existing technologies failing without network access; 3. Population Adaptation: Threshold settings are optimized for the elderly population, and an adaptive calibration mechanism is used to reduce the risk of false negatives and false positives, thereby improving the usability for the elderly. 4. Real-time and accurate: The response time is less than 5ms and the precision of clicks is bound together. Combined with the real-time requirements of fraud interception, it can achieve call rejection within 3 seconds and meet the requirements of scenario-based technical effects. 5. Storage security: Pure passive optical storage structure, without electronic storage units, avoids the risk of leakage and tampering of electronic storage, and improves storage security.

Claims

1. A fraud prevention early warning and interception system based on an optical guide interaction layer, characterized in that, It includes a light guide interaction layer, a coordinate mapping unit, a management decision terminal, and an early warning and interception unit; the light guide interaction layer is a purely passive optical structure without electronic components, including an array of photo-induced deformation units and an optical encoding storage area; the optical encoding storage area is a purely passive optical structure without electronic storage units; the coordinate mapping unit works in conjunction with the light guide interaction layer to achieve sub-millimeter level precision clicking, meeting the real-time requirements of fraud interception.

2. The system according to claim 1, characterized in that, The array-type photodeformation unit uses piezoelectric ceramic material and has a response time of <5ms, which meets the real-time requirements of fraud interception.

3. The system according to claim 1, characterized in that, The optical encoding storage area is a one-time optical encoding storage area, which achieves fixed encoding storage based on holographic grating.

4. The system according to claim 1, characterized in that, The management decision-making terminal has a built-in encrypted fraud signature database that covers a variety of fraud types.

5. The system according to claim 1, characterized in that, The interface type recognition is achieved by collecting the relative grayscale difference of the screen interface, combined with an adaptive calibration mechanism to adapt to the display differences of different terminals.

6. The system according to claim 1, characterized in that, The early warning and interception unit receives the interception command from the home management decision-making terminal, drives the array unit of the optical guide interaction layer to complete the precise click, and realizes real-time interception of fraudulent information.

7. The system according to claim 1, characterized in that, The optical encoding storage area adopts a reconfigurable optical storage area, which supports the updating of pre-authorized information.

8. The system according to claim 1, characterized in that, The fraud feature matching of the aforementioned supervisor's decision-making terminal is based on weighted calculation, with the number having the highest hit weight.

9. The system according to claim 1, characterized in that, The comparative experiment was conducted using the same 12,000 samples under the same testing environment, with only the threshold parameter adjusted and other conditions remaining unchanged.

10. The system according to claim 1, characterized in that, The bit error rate of the array-type photodeformation unit is less than 0.1%, which meets the reliability requirements for fraud interception.