1. foolproof
No security system is foolproof.
He said he had a foolproof scheme for making money.
The system of preventing credit card fraud is close to foolproof.
a foolproof method; a foolproof identification system
No job, employer, organization, direction, etc. is foolproof or change-resistant.
Inglese parola "łatwy w obsłudze"(foolproof) si verifica in set:
Can you prove who you are?Studia rozdział 1