The API facilitates OAuth 2.0 and the Live SDK for Microsoft accounts to authenticate users against their OneDrive, where the notebooks are stored. The Office Lens app builds on the same foundation and transforms a smartphone's camera into a pocket scanner for printed or handwritten documents, which trims and enhances the scans to make them more readable by straightening angles for example. Notably, it works by capturing an image of the page and then using OneNote's built-in OCR capabilities to make scanned text searchable and editable. Microsoft's apps include the OneNote Clipper, which is promoted as 'your camera for the web, snapshotting any webpage you see directly into OneNote'. The OneNote API launched together with several apps from Microsoft and third party providers like IFTTT. Microsoft recently announced the initial release of the OneNote API, which enables programmatic integration of its free-form information gathering and multi-user collaboration tool across different programming languages and platforms like Windows, Windows Phone, iOS, Mac OS, Android and the web.

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