Mantra Softech Secures U.S. Patent for Groundbreaking Optical Fingerprint Scanner with Coherent Gating Liveness Detection

Ahmedabad, Gujarat, May 29, 2025 — Mantra Softech India Pvt. Ltd., a global leader in biometric authentication and identity management technology, proudly announces the issuance of a United States Utility Patent (Patent No. US 12,315,287 B2) for its innovative invention titled "Optical Fingerprint Scanner and Method for Detecting Optical Coherent Gating Liveness."

This patent, granted by the United States Patent and Trademark Office (USPTO), represents a significant leap forward in biometric security. It protects a novel optical fingerprint scanning system that simultaneously captures both the external and internal surface characteristics of a fingerprint—making spoofing and fraudulent identity attempts significantly more difficult.

A New Era in Biometric Liveness Detection

Traditional fingerprint scanners focus solely on the surface patterns of the skin—ridges and valleys—which, although unique to every individual, can be replicated using molds, silicone prints, or photographs. This makes them vulnerable to spoofing attacks. Mantra's newly patented invention addresses this security gap by integrating optical coherent gating, a principle derived from Optical Coherence Tomography (OCT), into its fingerprint scanning technology.

The patented system uses a dual-path optical configuration: one path captures the conventional external fingerprint image, while the second path uses a broadband light source and Michelson interferometer configuration to capture the internal microstructure of the finger's subsurface, referred to as the internal surface plane. This dual-layer approach enables robust liveness detection, ensuring that the fingerprint being scanned is from a living person rather than an artificial reproduction.

In doing so, the system can effectively detect and prevent a wide range of spoofing techniques without requiring complex multi-spectral analysis or large-scale data computation. This results in a cost-effective, compact, and highly secure biometric solution suitable for deployment across various high-security sectors.

Innovation Built in India, Recognized Globally

The recognition by the USPTO reinforces Mantra's reputation as a serious global innovator in the biometric field. The granting of this U.S. patent not only solidifies Mantra's technological credibility but also opens the door for international licensing, commercial partnerships, and product integrations in one of the world's most competitive markets.

"At Mantra Softech, we've always believed in solving real-world problems through indigenous innovation," said Hiren Bhandari, Founder, Mantra Softech. "This patent is not only a testament to the strength of our R&D but also to the relevance and impact of Made-in-India technologies on the global stage."

Applications Across High-Security Sectors

The newly patented fingerprint scanner offers immense potential across a wide range of industries where identity verification and fraud prevention are critical:

• Banking and Finance: Secure ATM authentication, eKYC, and mobile banking login where biometric authentication is required.
• Border Security & Immigration: Enhanced passenger identity checks using non-spoofable biometric terminals.
• Defense and Law Enforcement: Accurate and secure access control for restricted zones and digital forensics.
• Government Welfare Programs: Preventing fraudulent benefit claims by ensuring genuine biometric identity during Aadhaar-based authentication.
• Healthcare: Patient identity verification at point-of-care with a focus on security and hygiene.
• Workforce Management: Liveness-verified biometric attendance systems for enterprises and industries.
• Consumer Electronics: Integration into mobile devices, laptops, or smartcards requiring secure biometric login.

By ensuring both internal and external surface imaging in a single scan, the solution provides a new standard of trust, speed, and reliabilityin biometric identity authentication.

Technology at a Glance

The patent outlines an optical fingerprint scanning system with the following technical highlights:

• Dual Light Sources: One conventional and one broadband source for internal imaging.
• Zero Path Difference Michelson Interferometer: Ensures precise coherent gating of internal fingerprint structures.
• Two Optical Paths:
• First optical path captures surface ridges (external fingerprint).
• Second optical path forms interference images of subsurface layers (internal fingerprint).
• Two-Dimensional Photodiode Arrays: Capture and process imaging data from both optical paths.
• Compact Optical Design: Lower complexity and computation overhead compared to multispectral or 3D optical imaging systems.

This intelligent optical layout enables a simultaneous capture of liveness cues and visible patterns, offering a seamless user experience without additional steps or hardware.

Mantra's Ongoing Commitment to Biometric R&D

Mantra Softech has long been recognized as one of India's premier biometric device manufacturers, with a wide product portfolio that includes fingerprint sensors, face recognition systems, iris scanners, biometric POS terminals, and access control systems. The company serves over 15,000 clients globally, including government departments, financial institutions, telecom operators, and private enterprises.

Mantra invests heavily in research and intellectual property development, with multiple domestic and international patents already in its portfolio and several others currently under examination. This recent patent reinforces its ongoing strategic focus to expand in global markets through cutting-edge, IP-driven products.

"Biometrics has become a cornerstone of digital identity, and our mission is to keep it trustworthy and secure," added Haresh Khadsalia. "We're proud to contribute to global biometric standards from India, and this patent is just one of many steps in that journey."

What's Next?

With the U.S. patent now secured, Mantra Softech is poised to integrate this technology into its next generation of biometric scanners—targeting deployments across critical infrastructure and public-facing systems. Additionally, the company is exploring international partnerships for technology licensing, OEM integration, and collaborative research projects to extend the reach of this invention.

Mantra is also in the process of filing additional patents in other major jurisdictions to expand its intellectual property protection and capitalize on global demand for high-assurance biometric systems.

About Mantra Softech

Mantra Softech India Pvt. Ltd. is a leading provider of biometric hardware, identity management solutions, and secure authentication technologies. Headquartered in Ahmedabad, Gujarat, Mantra's product portfolio includes biometric sensors, AI-based facial recognition devices, electronic voting systems, and smart kiosks deployed across more than 25 countries.

With a strong in-house R&D team, state-of-the-art manufacturing units, and a client base that includes government bodies, law enforcement, telecom, BFSI, and healthcare sectors, Mantra is committed to building a secure, inclusive, and digitally empowered future.

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