While QR codes haven’t been the marketing juggernaut that companies have hoped, it’s still an extremely useful technology for sharing things online quickly. Asking a teenager to download a QR code ...

You can use your iPhone to scan documents, QR codes, and other files using the Notes app and your camera.

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There are still needs for paper-based documents in certain circumstances where electronic documents cannot efficiently replace them. For example, documents issued by the government such as birth ...