Black-and-White Stripes Used in Pricing Goods
Puzzle 2 of Safety First Hard Pack
Question is: Black-and-White Stripes Used in Pricing Goods
and the answer is: BARCODE
Word Meaning:
BARCODE — Any set of machine-readable parallel bars or concentric circles, varying in width, spacing, or height, encoding information according to a symbology.
Definitions from Wiktionary.