Without prejudice to Article 12, where the controller has reasonable doubts concerning the identity of the natural person making the request referred to in Articles 17 to 23, the controller may request the provision of additional information necessary to confirm the identity of the data subject.
Gan dochar d’Airteagal 12, i gcás ina bhfuil amhras réasúnach ar an rialaitheoir maidir le céannacht an duine nádúrtha a dhéanann an iarraidh dá dtagraítear in Airteagal 17 go Airteagal 23, féadfaidh an rialaitheoir a iarraidh go soláthrófaí tuilleadh faisnéise, ar gá í chun go ndeimhneofaí céannacht an ábhair sonraí.