Of course you do; you use the Internet… So what’s the answer to pervasive tracking technologies? Well, one answer — at least when you’re able to step off grid entirely because you don’t need to use your kit for a bit — is to put your devices (and connected cards) inside a faraday cage to isolate them from the various wireless networks they might otherwise interact with.

This may sound a bit drastic, but if you want control over something digital the equivalent of a physical kill switch can feel pretty reassuring. It’s much like sticking a piece of masking tape over your webcam — just to be sure.