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Total 5 documents matching your query.

1. [RFI] Wal-Mart to Put Radio Tags on Clothes - WSJ.com (score: 1): Author: "doc@kd4e.com" <doc@kd4e.com>; Date: Fri, 23 Jul 2010 16:58:41 -0400; I presume that these are the type that only "transmit" when the scanner induces enough energy inductively to cause them to do so? http://online.wsj.com/article/SB1000142405274870442130457538321306119; /archives//html/RFI/2010-07/msg00021.html (8,338 bytes)
2. Re: [RFI] Wal-Mart to Put Radio Tags on Clothes - WSJ.com (score: 1): Author: Andy <ingraham.ma.ultranet@rcn.com>; Date: Fri, 23 Jul 2010 22:56:02 -0400; I'm not very knowledgeable about RFID tags, which is what I think these are. But my understanding is that RFID devices have no internal power; they get their power from the nearby scanner, and otherw; /archives//html/RFI/2010-07/msg00022.html (8,085 bytes)
3. Re: [RFI] Wal-Mart to Put Radio Tags on Clothes - WSJ.com (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Sat, 24 Jul 2010 06:39:36 -0400; They do sound like RFID tags and are identified as such in the first article linked. They are also listed as removable. RFID tags are passive devices so the distance they can be read depends on the s; /archives//html/RFI/2010-07/msg00023.html (10,898 bytes)
4. Re: [RFI] Wal-Mart to Put Radio Tags on Clothes - WSJ.com (score: 1): Author: "Mark Walton" <k3mrk1@gmail.com>; Date: Sat, 24 Jul 2010 08:27:34 -0400; Doc, Credit cards and DL are magnetic strips (for now). The technology that Walmart is and has been using is RFID. Pretty much the same technology as EZPASS. I don't know if you have that in your sta; /archives//html/RFI/2010-07/msg00025.html (10,199 bytes)
5. Re: [RFI] Wal-Mart to Put Radio Tags on Clothes - WSJ.com (score: 1): Author: M Roden <w5jr.mike@gmail.com>; Date: Sat, 24 Jul 2010 14:35:59 -0400; The embedded chips in credit cards and ExxonMobil's "Speedpass" use a technology called Near Field Communications (NFC) at 13.56 MHz, yes, right below 20m. This is an international allocation. This i; /archives//html/RFI/2010-07/msg00026.html (11,915 bytes)

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