The Barry Bittwister Cabal presents a problem:
Your cell phone is tracking you, you know. By law, your phone has to tell where you are within 125 meters when you call 911, which isn't so bad on the face of it. However, the telecom systems can use your phone to track you at any time. In some cases, this can be done even when your phone is off. We're not sure how you feel about it, but we don't like being fitted with a radio collar at all times. This nonconsensual tracking is growing common in the US now, but has been around in Europe for quite a number of years. So what's a paranoid to do?
Their solution? The Invisifier, an aluminum & duct tape sheath for your cell. Its dual-action AFDB/Faraday cage construction keeps psychotronic signals from your phone in and EM tracking signals from the NGA satellites out.
(If I had just waited two centidays for the email I could have included this with the previous post and padded that out a bit...)