On Tue, 2012-08-21 at 17:15 +0100, Anthony Lucas wrote: > 3 can be quite good with the traffic detection if it's obvious. > > In my experience, 5 or so hours of usage (unauthorised tethering) and they're > on to you. > Pop it back in your phone, reboot or lose the tower, and you're back in > business as far as internet access on the phone, but you're now on some kind > of watch-list and they're a lot faster to catch on the second time.
There are many ways to do this. If your phone/device supports it I suspect using the device as a wifi hotspot is among the safest but it's true that they are perfectly well able to detect it.