Which groundbreaking invention, patented in 1952, revolutionized retail inventory management and is considered the precursor to modern barcode systems?

The modern retail landscape relies heavily on sophisticated inventory management systems, but these technologies have fascinating origins. Before barcodes and RFID tags revolutionized how we track products, inventive solutions were developed to address the growing complexity of retail operations. This poll explores a pivotal moment in retail inventory management history that transformed how businesses monitor their stock and shaped today's automated systems.

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Norman Joseph Woodland and Bernard Silver's bull's-eye barcode system
IBM's magnetic stripe inventory cards
Sylvania's electronic product code (EPOC) system
RCA's radio frequency identification prototype