A little-known EU agency now controls €1.99bn in tech contracts and algorithms, working with major tech companies such as IDEMIA, IBM, and Leonardo SpA at the EU’s borders — even though most people being scanned have no idea how the system works or how it judges them.

The EU's Entry/Exit System only became fully operational in April but already faces backlash

The E.U.’s new electronic entry system has been in full effect for only a few months, but some airports and airlines are already calling for it to be overhauled.