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Re: [Shop-talk] Toughest EE question ever asked here.

To: <shop-talk@Autox.Team.Net>
Subject: Re: [Shop-talk] Toughest EE question ever asked here.
From: "Jack Brooks" <>
Date: Thu, 2 May 2013 19:36:54 -0700
References: <>
Thread-index: Ac5HU5/ZduvR6RbfQM+wuGG+qfPB4gAUqvdA
I keep my "swipe" card in my wallet and hip-check the door sensor.


-----Original Message-----
[] On Behalf Of
Sent: Thursday, May 02, 2013 9:06 AM
To: shop-talk@Autox.Team.Net
Subject: [Shop-talk] Toughest EE question ever asked here.

OK, it's a stretch to say this is shop related, but IF I can get it to 
work, it will be lots of 'cred' for me at work!  8>)

I work at a building that requires proximity cards at just about every 
door.  That means lots of swiping all day long.  Of course everyone wears 
their card around their neck or on little pull chains.  I put mine in my 

The system we have is made by 

Here is the question.  I would love to be able to put my card in my cell 
phone case and just use that to swipe the readers.  Problem...

The phone interferes with the reader's ability to read the card.  In fact, 
if I put a piece of aluminum foil behind the card (and my phone is no 
where near it), the reader can't read it.

I've also tried a product like this

But if I have that *behind* the card (meaning not between the card and 
reader) it still doesn't read the card.

So, to the question, What can I put between my cell phone and card to make 
the card reader still see the card?  It needs to be thin.

If someone can get me the answer, I'll make a donation to 
in their name!

I know there are EE's out there that can answer this. 


Eric P
"Be as beneficent as the sun or the sea, but if your rights as a rational 
being are trenched on, die on the first inch of your territory." Ralph 
Waldo Emerson 

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