2016-01-05 12:28 GMT+01:00, Karl Hammar <karl@???>:
> And what has "how to login" to do with "how to boot" ?
>
> Regards,
> /Karl Hammar

It's easier to
* avoid hacks in the login process if your software controls
everything from the power button to the session;
* get away with "your OS will die without my software!!!" if nobody
knows how to authenticate in non-keyboard ways without it.