One thing to keep in mind when stealing free WiFi access, especially from near an apartment building, is that it's known as
[/b]Unauthorized Access To A Computer Network[/b] and is a Class C (or third-degree) felony. If you do anything
else illegal while online it'll get bumped up to a Class B Felony (kiddie porn will get you a Class A ding, for sure).
Many WiFi hotspot owners (in homes especially) intentionally leave their access points unsecured and don't mind if other people use it. And some places advertise free WiFI access (like Panera Bread, for example) and don't mind at all. Some people leave them unsecured out of ignorance, yet don't really care one way or the other if people use their access point. Still others secure their networks to prevent unauthorized usage. In any case, secured or not, if you access the network without permission it is still unauthorized use and you are subject to criminal charges.
While it is very rare for people to be charged with anything, unless they are doing something illegal online, it is something to keep in mind when you are sitting near an apartment complex or in an office park.
Without using a directing antenna to zero in on your exact location, it's nearly impossible to know precisely where or who is stealing access from an unsecured WiFi network (although your MAC address will be known, and if it shows up in enough places, enough times, you'll eventually be caught with it, but that's well after the authorities have gotten deeply involved). Still, that blue glow from the computer monitor piercing through the windows can be a dead giveaway.
Stealing WiFi is pretty benign, and for the most part no one cares. The chances of getting into any trouble at all are pretty remote, especially if you don't try anything funny while online, like SPAM, or spoofing, anything illegal, or whatever. Just the same, it's probably a good idea that folks are fully aware of what's going on when they are accessing a private WiFi hotspot.
I think it was the blue glow more than the van itself that caught the attention of the Secret Service when I was parked on the street outside of the UN Building early one morning.