A, A customer fills in a paper registration form., B, A clerk types information from the paper form into the system., C, A barcode scanner reads a product code at a supermarket., D, A cashier manually enters product code using keyboard., E, A biometric machine scans a fingerprint for attendance., F, A staff member uploads scanned documents into the system., G, A patient verbally provides information to a nurse., H, The nurse types the patient's information into the hospital system..

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