Key **** ********
*** ******* ******* *** following ******** ***** **** shields:
- *** *****/**** **** ******* were *** **** ********* shields ** *** ******** we ******.
- ********* *** ****** **** is *********. **** ********* obscuring *** **** *** still ***** *** **** to ** ********* *** transmit ****.
- *** *** ***** *** more ********* ** ****** than **.** ***. *** higher ********* ****** *** a ****** **** ******* through ****-**-***** ************, *** that **** ******** **** makes ********* **** *********.
- *** **** ****** ********, they *** ************** ** even ********* ***** *****, but ********** ***** *** still ** ************ ********.
- **** ***** ** *** copier/reader ******* ****** ************* strength. ****** ****** *****/****** range ******* *** ****** and ****-******* ********* ******* that *** ** ********* for ******* *******.
** *** ***** *** sections *****, ** ******* these ******** ** ******.
RFID ********* **** *****
** *** ***** *****, we **** ******* *** four ***** ** ******* we ******, **** *** surprising **** ********* ******** being *** *****/**** *******:
FIPS-201 ***** **** ****** ****** - ~$** ****
** ***** ** ******* claims, *** ****** ******** the **** ************* *********** was ********-*** ********* **** ********** ****** *** ******* "******** your **** **** ************ scanning."
*** **** ***** **** claim ** **** ********* true. ***** *** *** happen **** *** **** of *** ****** ******* by *** ******** ***** shield *** ********* ** the ******, *** ** the '****' *********** **** of *** **** ***** the ******, ***** ******** normally, ** *** ********* a ****** ************ ********, the ******** ** *** time. *** ****** ******* only **% ** *** reads ** **** *************, versus ***% **** ********.
******* ****** ***** *** commonly **** ** ******* ID ******, **** **** commonly **** ** **** with *** *******, ********** side ****** ***. **** makes *** **** ***** of **** ****** ** an ****** ********** ****** dubious.
Paper/Foil ******* - ~$* ****
*** **** ****** * surprising ****** - *** of *** ***** ********* and '******' ******** ********* the ****.***** ~$* ****-***** ***** sleeves**** **** ********* ** stopping ***** ****.
** ***** ** ***********, the ******* ******* ***** from ******* *** ******* **** *********% ** ******** *** both *** *** *** 13.56 *** *****. ** general, *** ******* ********** covered ******** ** *** card, ***** ***** * rouge ****** *** ****** penetration **** ** ******** the **** *********.
** ****, *** **** used * ***, *********, unripped ******, *** *** lightweight ***** ************ ** not ****** ** **** up **** ***** **** days ** ******* ***.
Anti ******* ****** - ~$**
*** '******* **********' ****** of * ******* ********* '******** ******' *** *** **** performance ****** ******. ***** the ******* ****** "**** your ****** ** ****** built ** ****-******** ********** prevents ****** ****** ******* from ***********", *** ******* shows **** ******** *** kHz ***** **** *** wallet ****** *** ******* when *** ******* **** faced *** ******.
*********, *** ****** ******* scans **** *** *******/**** bulky **** ***** *** reader *** ******, *** intermittent ***** ***** ********.
*** ********* **** - 13.56 *** ******** ** any **** ** *** wallet ************* *** *******, and *** ****** *** successful.
Aluminum **** - ~$* *** ****
**** *** ****** *** the **** ** *** shielding *********, **** ****** household ********* *** ** used **** *******? ** tested ****** ********-***** ******** duty ******** ****, **** a ***** ********* ** about *.* **** *****. In *** ****, ******** less **** * **** (folded ******) ** **** was *** ** ********* shield. ** **** * full * **** ****** shielding *** ********** ****** to ***** ***% ** attempted *****.
** ***** ** **********, raw **** *** *** worst ****** *** **** easily, ****** *** ******** use * ********* ****** at ****.
Migration **** **** *** *** ***** *******
** ***** ** *** ******** ****** ****** ******* Migration *****, *** **** ** copying *********** ** ***** in ***********, **** *** 125 *** *****. ** noted:
"*** **** *****, *** **** *** ********* as *** ***** ** warrant ******** *****, *******, the ********* ** ***** easy ******* *** ******* and ********* *** *****. Security ******** ****** *** consider *** ********** ** getting ************ ********** *** 'high ****' *** *** cards ** **** ** getting '*** ****' ********* mechanical **** *** ** any ******** ** *** box ****** *****."
*** ***** ***********, **** shielding *** **** ** important **** ** ****** copying *********, ********** ***** the '********' ****** ** moving ** **.** *** cards ** ******. ** our ****** *******, *** most ********* ******* **** among *** ********, *** far **** ** ****** than ******** ***** *** readers.
*******, *** ********** ** sleeves ** * ********* fix ** *******. ***** using * ***** ****** to ****** ***** ** inexpensive, **** **** *** likely **** ** ***** constant ***, *** ******** replacement ****** ** ********.
Comments (5)
Jim Elder
Unfortunately, it still takes some action on the part of the cardholder to shield his/her card. Unless there is a personal motive, my experience tells me that any of the solutions would be successful in a full deployment . One of the big benefits of a non-contact technology is that you don't have to take the card out of your wallet or purse. Using any of these would eliminate this benefit.
A related question. Have you tried two cards back to back? With the same card number? Different numbers? Different formats?
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Blake Murphy
Thanks, there is much food for thought in this article as cheap scanners become more available & our expensive "shielded" wallets become less suitable
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Thrax Cui
Shouldn't higher frequency gives you shorter wavelength? And longer wavelength harder to block?
Is the following statement wrong oder?
"The higher wavelength signal has a harder time passing through line-of-sight obstructions, but that same property also makes shielding more effective."
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