A user of a digital pen in an information management system is allowed to have a number of aliases when communicating in the system. The system includes a plurality of products, which are provided with a position code, a plurality of digital pens capable of reading the position code, and a server communicating with said digital pens. The server includes a position database which associates positions coded by the position code with rules for information management. A pen identifier is associated with a digital pen and at least one alias is associated with the pen identifier, the alias being indicative of a role of a pen user when the user communicates via the digital pen in the information management system. The alias information is communicated to the system, e.g., when the digital pen is operated to mark an activation icon on a product, which includes position codes whose associated rules manage the association between alias and pen identifier.