Co-Authors: Pavlo Kozhukhar and Yuriy Agalidy.

This presentation focuses on the analysis of banknotes based exclusively on their magnetic properties, using magneto-optical (MO) technology as the underlying examination principle. It demonstrates the application of MO-based magnetic methods in banknote authentication and print quality control. Magnetic topograms are employed as a visual tool to assess the spatial distribution of magnetic ink, supported by amplitude analysis to evaluate signal strength and consistency. In addition, frequency-domain analysis using the Fast Fourier Transform (FFT) is applied to characterise magnetic signal structures and identify deviations from expected patterns.

The advantages of these MO-based methods are discussed, including their non-destructive nature, high sensitivity to ink composition and printing parameters, and suitability for both qualitative and quantitative evaluation. The presentation highlights the widespread use of magnetic analysis in addressing authentication challenges and maintaining consistent printing quality during banknote production.

Keywords: magneto-optical technology, magnetic analysis, banknote authentication, magnetic topograms, amplitude analysis, FFT, print quality control