Tuesday, August 9, 2011

How to keep your cell phone from being traced, without removing the battery


Although I seldom turn my cell phone on unless I am about to make a call, I realize that it can nevertheless be pinged. One solution would be to remove the battery but that's a bit of a hassle.

This morning I put the phone in my aluminum briefcase and called the number. It rang.

Next, I put it in my fireproof file cabinet and then called it. It rang again.

I drove into town and bought a 25-foot box of aluminum foil at the Grizzly Grocery for $1.40. Back home, I cut out a 6 by 6-inch square, wrapped it around the phone, and called it. NO ANSWER.

Hmmm ...

Let's see: The box of foil will yield 100 6-inch-square pieces, at a cost of $0.014 each to protect 100 cell phones. If I buy the boxes by the case, at a discount, and sell each cell phone protector for 99 cents, that will be a profit margin of, uh ...

12 comments:

  1. You;re setting your price too low. At Identity Stronghold, they sell a cellphone shielding bag for $29.95.

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  2. Yes, thanks for posting this. The site has a number of interesting items.

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  3. Jack, just a heads up - a quick Google revealed the address of the only Grizzly Grocery in the country, and by inference, your general location. This is a harmless case, but just goes to show that no one is immune to the little mistakes that can sink privacy as much as the big, glaring omissions. Next time, a fake store name? :)

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  4. Grizzly Grocery: You said I made an error, and next time I should use a fake store name. There was no error. This is called "misdirection."

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  5. Mylar bags work great for stopping cell phone signals...as long as the bag is CLOSED completely. You can purchase mylar bags online, or you can go the 'cheap' way and buy a 99 cent bag of chips, dump the contents, clean out the inside, and you have a cell-phone jamming bag that doubles as camouflage. Just be sure not to throw the bag out accidentally with your phone still in it!

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  6. WARNING: Stick to aluminum foil. I just tested a mylar bag, tightly closed. My phone nevertheless rang.

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  7. Well I just put phone in 6inch square of aluminum and wrapped it and it still rings. So I guess you must be using a diff.kind of aluminum foil. Mythbusted doesnt work.

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  8. If it still rings, perhaps your phone is different than mine. Please try once more with heavy duty aluminum foil and wrap it around, twice. Remember, it MUST be tightly sealed! Then e-mail me with the result, please.

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  9. I'm surprised your aluminum suitcase didn't work. It must be thicker than foil. Perhaps it just doesn't seal tightly enough so that there are non-aluminum "holes" in terms of radio signals...

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  10. Aluminum briefcase would still have a seam all around that is most likely not aluminum, but plastic. Plastic or other similar material will not block signal, in other words a breifcase can not seal tightly enough.

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  11. It's nice to know how to keep your cell phone to track without removing the battery.

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