题目内容
Flatbed, document, and portable are types of _______ that accept documents and convert them into machine-readable form.
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Supermarkets use _______ to scan codes printed on product containers.
The most common card reader is the _______ card reader which reads encoded information stored on a thin magnetic strip located on the back of the card.
_______ tags are tiny chips that can be embedded into almost anything and contain information used to track and locate lost pets; to monitor production and update inventory; to record prices, product descriptions, and locations of retail items.
_______ recognition is often used to score standardized multiple-choice tests.
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