1. Introduction
Canada, as others Western countries, faces the growing population of seniors. The statistics provided by the Public Health Agency of Canada [2] give us an idea of the problem: in 2001, one Canadian out of eight was older than 65 years old. In 2026, this proportion will be one out of five. It is important to notice that a majority of seniors, 93%, reside in private house, and among them, 29% live alone [2]. One of the greatest danger for old people living alone are the falls. Almost 62% of injury-related hospitalizations for seniors are the result of falls [3]. And the gravity of the situation can increase if the person can not call for help.