'Rather than thinking of these things as PC's that "are not yours", consider them publically accessible on the user level only. '
You've never heard of end-user level access of things leading to abuse? Phone phreaking, 'Cracked!'. The former is just a harmless fun game that we used to play (damn these digital phone systems!), but the latter, look at the devistation that this caused, and this was just bits flying around different transistors and wires, but, with oxygen, immagine the power someone could have, and and and, a viral effect might possibly take effect.
My thoughts on these devices:
ATMachines-these are heavily secured, and users of these are tracked and even video taped, are we going to put a system like oxygen in a police state, remember the power that these itsy bitsy machines will have, the amount of people that will be influenced?
public phones-these are vandelized, I even read a story about how someone set up a whole system of other people's phone lines (grey boxing) and hooked those into a home-made switch board, and then went so far as to hook a cordless phone into a payphone across the street and listn to other peoples calls. The story was false (it said so at the end), but it was all very plausable (I was thinking seriously of trying it myself ;) ).
automated toll gates-in my city, people routinly go through the man-manned without paying (they have a weird system of leaving the gate up and putting a cone there when no one is there, I guess they'd rather have a cone moved, and loose a few bucks than to have someone trash their facilities).
'...having the house know that it's time to turn on the AC in the summer and heaters in the winter...'
They already have systems like this, but I see your point, having your car start up in the morning right before you leave, but only if it sees that you got up, perhaps by seeing if the shower was run for ten minutes that morning.
'Ever try to crack open a SecureID card to get at the ICs? Once you crack the seal, it's dead hardware. '
I've never heard of the SecureID, got a url for that?
'Hello sir, you don't look like someone who satisfies his wife.'
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