A team of people, reviewing fuel transactions, with genuinely active fleet or fuel manager who makes sure you aren't losing money because of fleet fueling fraud or diesel fuel theft.
Even if such a secret human existed, what often be done if something bad goes wrong with this person? https://www.Zanichelli.it/login/zd-login.php?zanitTargetUrl=aHR0cHM6Ly9Qb3N0aGVhdmVuLm5ldC9tMnEydHFmenZn