In a May 2009 Apple Discussions Forum titled "Speech to Text Yet?" – a user asked this question: I simply want to enter ISBN numbers from books into a word processing window by speaking them. Is there anything available yet for Macintosh that allows me to do this simple task? Well, it appears that Apple has something in the works on that very front, indeed. Today, the US Patent & Trademark Office published a patent application of Apple's which generally relates to deriving text data from speech data. Some software solutions today enable the user to enter text data using speech. These software solutions convert the speech to text using speech recognition engines. However, these software solutions can be difficult to use when entering symbolic characters, style or typeface input because they typically require escape sequences to exit a speech input mode and then additional input to return to speech input mode. Apple's solution involves utilizing both a speech recognition module and a text composition module using an iPhone.