I also prefer SR3, for what it's worth. Here's my take on your questions.
The wireless world is hard for the SINless, but it should be. The SINless are criminals and riff-raff; nobody really wants them in their fine establishments at all. Even a pretty poor fake SIN will work wonders. It might not get you past security, but the local shops will let you in and start advertising to you. Besides corps and other areas that really need to keep everyone unauthorized out, most places just want to keep petty thieves and trouble out. If you can afford a fake SIN, you have enough money that you are a customer and nobody will bother you.
Breaking in depends on how you run it. I don't think most systems would constantly check for SINs permitted in the building. You need a valid ID to get in or you need to find a sneaky route, but once your in the walls don't constantly scan you unless you're really in a maximum-security area. That many scans just aren't cost-effective.
Wireless access to cyberware is mostly fluff. You don't install patches in game, but part of the background is getting your 'ware checked out, upgraded, and kept in good running order. That was also in the SR3 fluff. Now that just means you have to be careful about turning off wireless access when you need security. It's mostly for verisimilitude and a few neat tricks hackers can pull against the unprepared (i.e. to give them some combat use, which deckers sadly lack in SR3). Think about it—hardware in the real world usually gives you some ability to run diagnostics without opening it up, and that should be doubly true when "opening it up" requires a surgeon with an operating theater.
Technology marches on, and now there's augmented reality and wireless. Yes, you can use an induction pad for your smartgun, but most smartguns don't run with pads anymore. It's probably more pleasant not to have the thing in your hand and to just use cybereyes rather than the whole simrig system. Yes, there's a security risk. That's why you make sure to keep a very small broadcast/reception area, including skinlinks that work at a touch range (just what smarlinks need!) and put some security on your 'ware.
QUOTE (Matsci @ Apr 21 2009, 12:31 AM)

Remember Cyberware is not set up for ease of use by people who are trying to stay of the grid. Cyberware is set up for ease of use by law abiding citizens. Most citzens don't care that they leave enough of a data trail for a corp to read minds. Hell, it makes life easler for them, so why should they care.
I disagree. Most cyberware is set up so users are protected from the local script-kiddies who want to turn off their eyeballs and have them slap themselves with their cyberarms. Milspec stuff has to be secure. And anything that goes through the hands of shadow doctors and other shadowrunner-friendly people will definitely get all the best security patches. Dead customers aren't repeat customers, and pissed-off live customers with glitchy 'ware and perfectly functioning guns ensure you'll never have any other customers ever again.
You can reject the new edition's flavor if you want and still keep most of the rules. Or you can take some of the new flavor, port it back to SR3, and leave the rest. That's what I do, but only because I'm a curmudgeon who faces his TN 13 to shoot a man in the head from a klik away with a sniper rifle and damn well likes his 1/36 chance per die. Now get off my cyberlawn.