First, biometrics are a reliable method of identifying third-country nationals who are present on the territory of the Member States but not in possession of travel documents or any other means of identification, a common situation for irregular migrants.
Ar an gcéad dul síos, modh iontaofa í an bhithmhéadracht chun náisiúnaigh tríú tír atá i láthair ar chríoch na mBallstát ach nach bhfuil doiciméid taistil ná aon chineál eile doiciméid aitheantais ina seilbh acu a shainaithint, cás nach annamh d’imircigh neamhrialta.