[ENGLISH] This thesis goes into context aware systems, specifically studies the AWARE framework and the information stored by this tool. The initial objective is the understanding of the term context awareness and the different types of context. A second objective is the study of the AWARE framework and the parts that compose it, which includes the client application (configuration and sensor information) and the AWARE server (database and web services). This study doesn't include any further programming of the sensors or the creation of new plug-ins. And as a final objective will be to test whether or not the AWARE framework is able to provide context aware information that allows the user to monitor, study and reconstruct a given activity. For this, a test was performed using three different users to recreate an ongoing activity in Barcelona. Also a test varying the location sensor settings was performed, to help improve the accuracy of the information offered by this sensor.