QR codes offer advantages in data capacity compared to barcodes. The function of barcodes limits the amount of information they can store. The purpose of the three large squares in a QR code is for positioning. However, a disadvantage of QR codes is the requirement for specific scanning technology.
One advantage of using QR codes over traditional barcodes is their ability to store more data in a smaller space. For example, a QR code can contain up to 3KB of data, while a barcode typically holds around 20-25 characters.
Barcodes bring this advantage by representing data through a series of parallel lines of varying widths, which limits the amount of information they can store due to their linear nature.
The three large squares at the corners of a QR code serve as positioning markers that help a scanning device locate and orient the code correctly to ensure accurate data retrieval.
One disadvantage of using QR codes is that they require a smartphone or a specialized scanner to read, which may not be universally available to all users.
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