The way it works is that you log on where you are and appearing in the alternate world where you are. That's where mobiles may be useful in moving about but they are limited in their time within the hack. So a PC will always log in in you'd home, but a phone means you could access it around the city.

Also, the firewall thing in the first lot of post is only a temporary thing until you pick up your weapons. Like a bit of a buffer zone. But as you get better and more powerful you may be able to log in with weapons already active.

This is all just a guide so it is up for discussion if people have interesting ideas or twists. Plus we have to note that areas like McHaggis and myself are probably still dangerous due to the MPs in the area.