HUNTINGTON BEACH, Calif. (KCAL/KCBS) - A California high school is putting hall passes in the past and instead requiring students to use a QR code to leave the classroom. Some students feel the new ...
QR codes are a type of barcode, or scannable pattern, that contain various forms of data, like website links, account information, phone numbers, or even coupons. QR codes are found everywhere from ...
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