Which point-of-sale innovation first allowed music retailers to scan album barcodes and automatically update inventory while simultaneously collecting customer music preference data?

The music retail landscape has transformed dramatically over the decades. From local record stores to digital marketplaces, the way we purchase music has evolved alongside technology. One of the most significant behind-the-scenes changes has been in point-of-sale (POS) systems that have revolutionized how music retailers operate, manage inventory, and interact with customers. This trivia question explores an innovative POS development that specifically changed the music retail industry.

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

RFID-enabled checkout systems (1997)
MusicScan POS (1991)
Apple's iTunes Store backend (2003)
Retail Audio Management Protocol (RAMP) (1988)