For that purpose, those persons should be subject to a rapid and straightforward verification of the validity of the travel document for crossing the border, and of the presence of signs of falsification or counterfeiting, where appropriate by using technical devices, and, in cases where there are doubts about the travel document or where there are indications that such a person could represent a threat to the public policy, internal security, public health or international relations of the Member States, the border guard should consult all relevant databases in accordance with this Regulation.
Chun na críche sin, ba cheart na daoine sin a bheith faoi réir fíorú pras éasca ar bhailíocht an doiciméid taistil chun an teorainn a thrasnú, agus fíorú i dtaobh an bhfuil comharthaí falsaithe nó góchumtha air, i gcás inarb iomchuí trí fheistí teicniúla a úsáid, agus, i gcásanna ina bhfuil amhras faoin doiciméad taistil nó ina léirítear go bhféadfadh an duine sin beartas poiblí, slándáil inmheánach, sláinte phoiblí nó caidreamh idirnáisiúnta na mBallstát a chur i mbaol, ba cheart don gharda cósta na bunachair sonraí ábhartha uile a cheadú i gcomhréir leis an Rialachán seo.