Clandestine nanoelectromechanical tags for identification and authentication

Sushant Rassay; Mehrdad Ramezani; Sumaiya Shomaji; Swarup Bhunia; Roozbeh Tabrizian

doi:10.1038/s41378-020-00213-2

Clandestine nanoelectromechanical tags for identification and authentication

Microsyst Nanoeng. 2020 Nov 30:6:103. doi: 10.1038/s41378-020-00213-2. eCollection 2020.

Authors

Sushant Rassay¹, Mehrdad Ramezani¹, Sumaiya Shomaji¹, Swarup Bhunia¹, Roozbeh Tabrizian¹

Affiliation

¹ Electrical and Computer Engineering Department, University of Florida, Gainesville, FL 32611 USA.

Abstract

The realization of truly unclonable identification and authentication tags is the key factor in protecting the global economy from an ever-increasing number of counterfeit attacks. Here, we report on the demonstration of nanoscale tags that exploit the electromechanical spectral signature as a fingerprint that is characterized by inherent randomness in fabrication processing. Benefiting from their ultraminiaturized size and transparent constituents, these clandestine nanoelectromechanical tags provide substantial immunity to physical tampering and cloning. Adaptive algorithms are developed for digital translation of the spectral signature into binary fingerprints. A large set of tags fabricated in the same batch is used to estimate the entropy of the corresponding fingerprints with high accuracy. The tags are also examined under repetitive measurements and temperature variations to verify the consistency of the fingerprints. These experiments highlight the potential of clandestine nanoelectromechanical tags for the realization of secure identification and authentication methodologies applicable to a wide range of products and consumer goods.

Keywords: Electrical and electronic engineering; NEMS.