Here are the possible solutions for supermarket reading clue
Answer
Clue
Relevancy
barcode
Clue
Supermarket reading
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.
upccode
Clue
A little reading at the supermarket checkout?
nook
Clue
Reading place ... or reading device
Definition
a corner in a room, also NEUK
steinem
Clue
Who said "A woman reading Playboy feels a little like a Jew reading a Nazi manual"