Det er også vigtigt at evaluere nuværende systemer for at vurdere, om der virkelig er behov for, at der skabes nye instrumenter, om de er gennemførlige, pålidelige, kompatible, hvad de koster, og om der i tilstrækkelig grad tages hensyn til beskyttelsen af personers grundlæggende rettigheder.
It is also important to evaluate existing systems so as to weigh up whether there is a real need for new instruments to be created, as well as their viability, reliability, interoperability and cost, and also whether the protection of individuals' fundamental rights is being given sufficient consideration.