[Bluez-users] Pin Authentication

Hi

I want to configure my computer, that accepts connection with some defined
default PIN.
How I should configure hcid.conf?
What I should insert in security , auto, none, or user.
Should I use passkey "1234" or maybe pin_helper /usr/bin/bluepin , and
bluepin is file with 1234.
Should I set maybe something else?

Thank you for any help

Best Regards,
Przemek.