Mac connects to wifi while sleeping in backpack?

Solution 1:

Sleep doesnt mean off. Its still connecting to familiar networks. I'd either turn off wifi while sleeping or power it off.

Solution 2:

Not very cool I would say. I was recently travelling through LHR and never opened my laptop in transit. When I got to my destination, the LHR free wifi was shown in my list of nearby networks for a few seconds, when it was obviously no longer in range. That means that while sleeping, it is scanning for networks. Hence tracking where it goes while sleeping. Yay!

Yes, I have Power Nap off.