Facial Expression Sequences for Fast Authentication Without Extra Devices
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Solution Overview
Problem
Existing authentication methods, such as One-Time Passwords (OTPs), are prone to interception, require additional devices, and are not fast enough for quick transactions, while alternative methods like Captcha-based validation can be complex and frustrating.
Innovation Solution
A facial expression-based authentication system captures multiple facial images during setup, compares them with pre-stored expressions, and provides an instant digital certificate for secure website access, optionally replacing or supplementing OTPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If OTP procedure is used for authentication, then security is provided, but the process is slow and requires additional devices
Solution Approach 1:
The patent replaces the mechanical OTP system (requiring SMS transmission and manual entry) with a biometric-based facial recognition system. The authentication application captures facial images and compares them with pre-stored images to generate an instant certificate, eliminating the need for SMS delivery and manual code entry, thus reducing authentication time while maintaining security.
Solution Approach 2:
The patent creates a digital copy of the user's biometric data (facial images) during setup and stores it securely. During authentication, the system captures a new facial image and compares it with the stored copy, enabling instant verification without requiring physical presence of additional devices or manual intervention.
2Reliability
If OTP procedure is used for authentication, then security is provided, but additional devices are required
Solution Approach 1:
The patent merges the authentication functionality into the primary device itself by using the device's camera and processing capabilities to capture and analyze facial images. This eliminates the need for separate authentication devices like SMS-capable phones or hardware tokens, as the authentication application runs natively on the device attempting to log in.
Solution Approach 2:
The authentication system uses the device's own resources (camera, processor, storage) to perform authentication operations. The device captures its own user's facial biometrics, stores them locally, and performs the comparison independently, making the system self-sufficient without requiring external authentication devices.
3Productivity
If facial expression authentication is used, then authentication speed is improved, but security may be compromised
Solution Approach 1:
The system performs preliminary actions by capturing multiple facial images with different expressions during the setup phase and storing them securely. This pre-prepared biometric data enables instant comparison during authentication without requiring multiple captures at login time, thus maintaining both speed and security through advance preparation of verified biometric templates.
4Reliability
If multiple facial images are captured and compared, then security is enhanced, but processing complexity increases
Solution Approach 1:
The patent segments the authentication process into distinct phases: setup phase where multiple facial images are captured and stored, and authentication phase where a single captured image is compared against the pre-stored set. This segmentation allows the system to enhance security through multiple reference images without increasing real-time processing complexity, as the comparison logic remains straightforward during actual authentication.
Data Source
AI summary
Systems and methods are provided for authenticating a user to enable a user device to gain access to a user account on a secure website. A user authentication method, according to one implementation, includes a step of capturing multiple facial images of a user associated with the user device and user account. The user authentication method further includes a step of comparing the multiple facial images with a sequence of pre-stored facial expressions. Upon detection that the multiple facial images adequately match the pre-stored facial expressions, the user authentication method also includes a step of providing an instant digital certificate to the secure website for gaining access to the user account.