I've taken multiple devices in for multiple repairs, and I've never had an Apple Genius ask for a PIN, passcode, or password. Every single time they ask me to

I've taken multiple devices in for multiple repairs, and I've never had an Apple Genius ask for a PIN, passcode, or password. Every single time they ask me to unlock the device and are careful to look away while when I need to enter my iCloud password to disable FMI/Activation Lock.