Security considerations . . .

A copper wallet insert shields your credit cards from RFID skimming.
Image: Adam Harvey

Get a Faraday wallet. Something with a lining made of copper, or steel mesh or even aluminum foil. Or add aluminum foil to the inside of the wallet you have. With one of those, “they” can “ping” you as you walk about, and the RFID’s in your credit cards and sometimes, Driver’s Licence, are shielded, and they stay silent. 

As well, street gangs and other low-lifes are getting into using ’em to identify targets to pick off, and it is alleged that they have the ability to even get through the RFID card security, get the data, and dupe an RFID card with your data.

You see, it occurs to me that the NSA could easily have all the banks' credit card data, and that means the banks' credit card RFID's chip ID’s for each account. 

So, it could be possible for “Security” to put RFID scanners all around, like TTC station exits, parking-lot doorways. Computer scan the passers-by and RFID’s belonging to “people of interest” could trip alarms. 

Similarly with your phone and its GPS, even “off” may not be off enough, and having a Faraday container will ensure that nobody can track you through your phone's GPS or by the phone's link-up with the cellular phone system. You may not be able to use your phone, but you will be a lot more “invisible” on the street, if you’re about something that you’d like to remain private.

WIRED has two reports worth checking out: Liz Stinson has an overview of security-oriented products, with an article and a Stealth Wear picture gallery, “Wanna Buy a Parka That Makes You Invisible to Drones?”, and a How-To Wiki, “Make a Faraday Cage Wallet”.

Duct Tape RULES!