Just curious.

If a criminal access the internet (LET's say posted something on Facebook) using anonymous ID under a public wifi, with his laptop, is it traceable?  Yes.

Just curious. What sort of crime are we talking about here?Let's say a murderer. To not reveal his location through electronic traces.

I know we can track the IP if he is posting from his house. Or track the signal if he is posting from his mobile.

But let's say he is using his laptop under the airport's wifi, with an anonymous account instead of his own account, can we track he is the SUSPECT?  The TIME of access from airport's wifi server records, the approximate location from knowing which base station, the CCTV showing everyone in that location, then you follow them around and see if they got on a plane, or left the airport in a car or on a bus, etc, zoom in and with luck you have a picture of their face, also you have the laptop MAC address... maybe it won't lead the police to him, but when they GET a suspect, they've got evidence to add to what they already know. The police don't just use the internet to catch people, they use old-fashioned police work.

A murderer ? ?

He'll be caught.I think using a murderer is a BIT controversial.

So let's say a hacker. Who hacks into someone's account or some sensitive website. We can know he is hacking from the airport. And from the CCTV, there could be many other people accessing the internet at the same time. So how can we know who is the suspect?
Quote from: Michael on June 18, 2012, 04:43:04 PM

So how can we know who is the suspect?

The police don't just use the internet to catch people, they use old-fashioned police work.