First of all, I do not know a lot about computers aside from turning them on and off and doing the very basics (e.g cleaning out files, defragging the hard drive, making backups, etc.). Second, I did read the Matrix rules (twice) and I did a search but I am still confused. Now, for my question: why is it that when a hacker hacks something, he has to be within the Signal range of either his commlink or whatever he is hacking, whichever is smaller? I don't have a problem with the rule; I just don't understand it. Don't people in the real world hack into stuff all the time without being anywhere nearby. I understand the mechanics (at least to a point) but I don't understand the premise. Can someone please explain it to me in "for idiot" terms?
Also, I understand that a commlink can only have one active Persona at a time (one active user?); however, can the commlink have multiple Personas available to switch on and off. Basically, can a person have two distinct identities on a single commlink kinda like how a computer today can have more than one user. For example, John Smith is a shadowrunner with a commlink. John Smith however is a fake identity. He uses John Smith to do all of the legit things that you need a SIN for (e.g. getting an apartment, a plane ticket, etc.); however, at night, he becomes Mad Matthew the bad ass street samurai. Can he use the same commlink but have totally different information on it (he switches back and forth) such that no one has any idea that he is also John Smith when he is in active mode as Mad Matthew?
Lastly, hidden mode confuses the hell out of me. Sorry, but like I said, I know very little about computers. I read in the Matrix rules that there are some places where you are required to be in active mode. If you are hidden, how would someone even know it? What exactly is seen/detected when a person is in hidden mode?
Any assistance will be greatly appreciated. Thank you.