This inventor holds 1 USPTO granted patent. Top assignee: Network Security Technologies, Inc.. Active years: 1997.
Company Filing History:
Years Active: 1997
Title: Innovations in Document Verification by Joel Hickman
Introduction
Joel Hickman is an accomplished inventor based in Concord, CA (US). He has made significant contributions to the field of document verification through his innovative patent. His work focuses on enhancing security measures to prevent counterfeiting, particularly in sensitive documents like credit cards.
Latest Patents
Hickman's notable patent is titled "Method for tamper-proof identification using photorefractive crystals." This invention presents a method and apparatus for document verification that utilizes a temporally variable physical process to create a reproducible effect that is difficult to replicate. The patent describes a document, such as a credit card, that incorporates a spot or stripe containing a multitude of photorefractive crystals arranged randomly. The verification apparatus employs a coherent light source, such as a diode laser, to illuminate these crystals, while a photosensor captures the scattered light. The unique random distribution and orientation of the crystals provide a distinctive characteristic for each document, independent of any assigned number or code.
The response of the photorefractive crystals to coherent illumination varies over time, depending on the intensity and temporal nature of the light. This variability complicates the counterfeiting process, as the input to the laser can be adjusted to elicit different responses from the crystals. The photosensor captures numerous 'snapshots' of the time-varying image, which are then digitized and stored. A comparison between the photosensor signal and the stored data determines the validity of the document.
Career Highlights
Hickman is currently associated with Network Security Technologies, Inc., where he continues to develop innovative solutions for security challenges. His work has garnered attention for its potential to significantly enhance the security of personal identification documents.
Collaborations
Hickman collaborates with talented individuals in his field, including Scott Phillips and Colin Brady. Their combined expertise contributes to the advancement of security technologies.
Conclusion
Joel Hickman's innovative approach to document verification through the use of photorefractive crystals represents a significant advancement in security technology. His contributions are vital in the ongoing battle against counterfeiting, ensuring that sensitive documents remain secure and trustworthy.