MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202541134718 A) filed by Vallurupalli Nageswara Rao Vignana Jyothi Institute Of Engineering And Technology, Hyderabad, Telangana, on Dec. 31, 2025, for 'a dielectric sensing module for the detection of concealed paper-based contraband in examination halls.'
Inventor(s) include Nakkella Madhuri; Khamar Sameena Shaik; and Dr. D. Manju.
The application for the patent was published on Jan. 9, under issue no. 02/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a non-invasive security system and method for detecting concealed non-metallic contraband, particularly paper-based materials, on a person passing through a screening portal. The system operates by generating a low-power oscillating electric field and sensing perturbations caused by variations in dielectric properties of materials present on the person. Since the human body exhibits a high dielectric constant while paper exhibits a significantly lower dielectric constant, the presence of concealed paper produces a distinct dielectric anomaly. A receiver unit captures changes in signal amplitude and phase, which are analyzed by a processing unit to calculate an effective dielectric constant and identify characteristic signatures of paper concealed against the human body. Upon detection, a dedicated alert unit generates a distinguishable visual and/or auditory signal. The invention is modular and retrofit-compatible, enabling integration with existing walk-through metal detectors without structural modification. The system ensures fast throughput, reduced false positives, safe operation, and preservation of individual privacy, making it particularly suitable for examination halls and security-controlled environments."
Disclaimer: Curated by HT Syndication.
