Windowing systems have been created to support a single user at the use of different applications. This Master Thesis consist of developing a new pointing device, from now called IP Mouse (IPM), that allows multiple cursors to interact with one application at the same time and supports the execution of a well-established applications in a multi-user context. That means that the system supports real time interaction in a shared display. The IPM system is based on the PS/2 protocol, and the core of its hardware is a ColdFire microcontroller integrated in a Freescale board (M52233EVB) that controls and supports all the parts of the design and has the features to can send the data through Ethernet. This work shows that the complete IPM system could be an effective support for multi-pointing interfaces on shared display systems.