Here are the possible solutions for product lines clue
Answer
Clue
Relevancy
cattlecalls
Clue
Lines of people read lines at these
hems
Clue
A-lines' lines
Definition
HEM, to provide with an edge
barcode
Clue
Product lines?
Definition
an arrangement, readable by computer, of thick and thin parallel lines, e.g. printed on, and giving coded details of, goods at a point of sale, library books, etc.
barcodes
Clue
Product lines?
Definition
BARCODE, an arrangement, readable by computer, of thick and thin parallel lines, e.g. printed on, and giving coded details of, goods at a point of sale, library books, etc.