Question

Why is a scanner called a keyless input device?

Answer 1

A scanner is an input device that scans documents such as photographs and pages of text. When a document is scanned, it is converted into a digital format. This creates an electronic version of the document that can be viewed and edited on a computer.

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Answer 2

Answer:

Because it works thorugh an Artificial Intelligence system.

Explanation:

You do not need to teach it how to scan, however you can crop or edit it later but it's not the point. And it is an input device because it input the data given by you to the system for processing.