Optoelectronic Access System and Method for Producing a Non-Duplicable Key

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention describes an optoelectronic access system featuring an electrically powered key that emits a unique, non-duplicatable light pattern, which is detected and verified by a sophisticated photodetector capable of resolving both spatial and wavelength information with high precision. The core novelty lies in using randomly arranged semiconductor light-emitters, such as quantum dots, whose emission properties are statistically determined and thus nearly impossible to reproduce or duplicate. Additionally, the patent covers a method for manufacturing such unique keys using advanced epitaxy and strain engineering techniques.

Use CasesContent extracted from patent full text and abstract with AI.

• Physical access control systems for secure buildings, rooms, or safes
• Digital data access or authentication tokens resistant to cloning
• Anti-counterfeiting measures for valuables or documents (e.g., as unique security tags)
• High-security authentication in IT or communication networks
• Secure vehicle entry and ignition systems
• Smart locks for personal or commercial use where cloning prevention is critical

BenefitsContent extracted from patent full text and abstract with AI.

• Provides a practically uncopyable physical key, enhancing security beyond conventional mechanical, optical, or digital methods
• Long operational lifespan compared to quantum cryptography-based solutions, which can degrade quickly
• Difficult and costly to reverse engineer or replicate, even with advanced manufacturing
• Combines the advantages of optical and electronic security for fast, contactless authentication
• Customizable emission patterns allow for highly individualized security characteristics
• Energy-efficient operation due to focused current injection and compact device design

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Inventors & Applicants

Patent Abstract

The invention relates to an optoelectronic access system, comprising a non-duplicatable electrically operated key (101) which emits a statically fixed light pattern (103) and comprising a spatially resolving and wavelength resolving photodetector (102) with a light output-sensitive output signal, wherein the spatial resolution of the photodetector (102) lies at least in the range of the resolution capa bility for the smallest wavelength of the emitted light pattern (103), said resolution capability being limited by diffraction. The invention also relates to a method for producing a non-duplicatable key (101).