The digital workplace has had the ability to photograph a Whiteboard for some time, whether for personal notes or to share with others. There are also mobile apps dedicated to this - even Google Drive has a 'Scan' feature with OCR text recognition, allowing the text to be indexed and thus discoverable.
Now there's something from Microsoft. It's called Office Lens. Though unfortunately only in the Windows Phone Store at the moment. Let's hope they release also an Android and iOS version.