Printers have developed at an astonishing rate over the last few years. Print quality that was once the reserve of high end and expensive corporate machines is now commonplace and available to home users. Colour printing, which was once an exception is now the standard. Features that were unthinkable just a few years ago are also now commonplace. Many home printers are now multi-function and can copy and fax as well as print. Scanning is also a popular feature and can encompass both image scanning and optical character recognition (OCR). OCR allows users to convert the text on physical documents into electronic format.