Most of these individuals were followed for 2010 through a systematic marking the location of a transponder, led by Frédéric Touzalin and Olivier Farcy and made possible by the many volunteers of the Association Bretagne Vivante project.
Wengi wa watu hawa walikuwa na kufuatiwa kwa 2010 kupitia utaratibu kuashiria eneo la transponder, wakiongozwa na Frédéric Touzalin na Olivier Farcy na inawezekana kwa kujitolea wengi wa mradi wa Chama Bretagne Vivante.