In this paper we present PIANI, an Intelligent Platform for Non Intrusive Assistance of Elderly People able to do activities in outdoor environments. PIANI allows inferring the risk level of the activity that an elderly person is currently doing out of his home. Also, our platform uses the smartphone of the user in order to collect geographic and time information which is used by the PIANIs server to calculate risk through formulas of probability and thus non intrusively determine the action to be performed when there is a high risk situation.
