What are the three different optical and two magnetic scanning techniques used for input and give an example of the use of each?

The three optical scanning techniques include optical character recognition (OCR), which converts printed text into digital text; barcode scanning, commonly used in retail for inventory management; and image scanning, such as flatbed scanners for digitizing photographs. The two magnetic scanning techniques are magnetic stripe reading, used in Credit and Debit Cards for transactions, and magnetic resonance imaging (MRI), which provides detailed images of internal body structures in medical diagnostics. Each technique serves distinct purposes across various industries, enhancing data capture and analysis.