I still do not see this option in the mobile app

It looks like they now have an option for this in the mobile apps, though I have not tested it yet.

This perfectly illustrates a **trust chain bottleneck**: your security is only as strong as your weakest link. Proton Drive's encryption becomes meaningless if you must hand sensitive documents to a third-party scanner app that harvests data before files even reach safe storage. The missing built-in scanner creates a forced vulnerability in an otherwise secure workflow https://bottleneckcalculatoronline.com/.

It would be great if the document scanning feature added to the Android app were also compatible with degoogled phones without GMS.

New feature reference: https://protonmail.uservoice.com/forums/932839-proton-drive/suggestions/47421149-a-document-scanner-for-mobile-apps

This function now exists in the Proton Drive app.

The function exists now. I don't know since when exactly, but on IOS you can scan with Drive.

Most phones have this built-in. Why would you want them to bloat the app with existing feature?
Every iPhone can "scan" documents from the "Files" app or the "Notes" for years and can store them anywhere.
My old Samsung also had such ability.

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I think this is created and done?! I've used this service several times and love it!

Yes!!! Asap please on Android!

It is already implemented on iOS.
Open Proton drive, go to the folder where you want your scan to be saved and press the "+" in the upper right corner. The last option in the list is: "Scan document". Voila!
No OCR though...

It just landed (iOS app at least). Not really used it due to lack of sync with macOS client.

Black-and-white feature like Google Drive or BlackBerry's built-in document scanner would be nice. Taking a picture isn't sufficient especially when color contrast is not high enough.

Asap, please.

Yes, this! I would absolutely ditch my scanner app in a heartbeat. I scan all my mail and upload to Dropbox, but would much prefer a secure and private option.

I am planning on replacing both Dropbox and Evernote with Proton drive. It would be great to drop GeniusScan as well. However, I would need to be able to forward those documents through other apps, since my Outlook account is the only way secure enough for my companies security standards.

I'm just using genius scan for now, but I would love this. Google drive has this feature

This is a great idea and very much in line with Proton’s mission. A built-in scanner in Proton Drive would let users capture and encrypt documents directly, avoiding third-party apps that demand excessive permissions. It could include OCR for searchable text, encrypted annotations, and the ability to scan directly into specific Drive folders. On the security side, end-to-end encryption from the moment of capture, metadata stripping, and secure sharing with time limits would make it stand out. This would close a real privacy gap and provide a seamless, Proton-native experience.