In order to prevent circumvention of border crossing points where the VIS may be used and to guarantee its full effectiveness, there is a particular need to use the VIS in a harmonised way when entry checks are carried out at the external borders.
Ionas nach mbeifear ag teacht timpeall ar phointí trasnaithe teorann ag a mbeidh VIS in úsáid agus chun a éifeachtacht iomlán a ráthú, tá gá ar leith le VIS a úsáid ar bhonn comhchuibhithe agus seiceálacha ar dhul isteach ag na teorainneacha seachtracha á ndéanamh.