A method of recording data in a data storage medium affixed to a document, the document having a document ID printed thereon and the data storage medium having the document ID stored therein, the method comprising capturing data written onto the document by means of a digital pen, the digital pen having an imaging system, determining, by means of the imaging system of the digital pen, the document ID printed on the document; comparing the document ID determined by the digital pen with the document ID stored in the data storage medium and on if there is a match transferring the captured data from the digital pen to the data storage medium.