There are many things you can run at boot via upstart.
If we had a list we could make a tickbox style GUI to enable them. This way each user can select which ever is required.

I use this to enable the camera key even if the device is locked. I can then use it for skipping track etc..

This I think will be a bad idea.
I am assuming nokiabot wishes the device auto locks on proximity close all the time and not just at boot time.

I think there is stuff in the repo that can do this (I remember testing something a while ago). The issue is it effects battery life due to polling the prox sensor all the time.