Which mathematical innovation was crucial for the development of modern retail barcode scanning POS systems?

Modern retail point-of-sale (POS) systems rely heavily on mathematical algorithms to optimize operations. From inventory management to sales forecasting, these systems have evolved dramatically over the decades. This poll tests your knowledge about a significant mathematical breakthrough that revolutionized retail checkout systems worldwide.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Fast Fourier Transform (FFT) algorithms for image processing
Bayesian probability models for product identification
Fibonacci sequence optimization for scanner movement
Euclidean vector analysis for spatial recognition