document scanner

When you need to sign and scan a document or don't have a proper scanner
ready, your iPhone will do just fine.

While so much of our daily lives are done digitally these days, sometimes
you still have to work with physical documents -- and then upload them
digitally after all. While you could use a proper scanner, there's an
easier way to do it: by using your iPhone.

Yes, your iPhone doubles as a document scanner. It may not produce images
as sharp as a dedicated scanner, but it does a respectable job, even when
the phone is positioned at odd angles trying to capture text. iPhones have
had this hidden feature since iOS 11 launched in 2017, but as Apple phones'
cameras have improved, so has their ability to take decent scans of
documents.

You won't need to download additional software or pay for a third-party app
-- Apple's Notes app that comes preinstalled on iPhones does the trick. The
good news is that it's quick and easy to scan a document, save it, and send
it wherever it needs to go.

https://www.cnet.com/tech/mobile/your-iphone-has-a-hidden-documents-scanner-heres-how-to-use-it/