The Cellar  

Go Back   The Cellar > Main > Current Events

Current Events Help understand the world by talking about things happening in it

Reply
 
Thread Tools Display Modes
Old 07-23-2007, 01:35 PM   #1
wolf
lobber of scimitars
 
Join Date: Jul 2001
Location: Phila Burbs
Posts: 20,774
There are different kinds, apparently ... short distance and long distance broadcast. Digital Angel was supposed to have one that would allow you to monitor your teen's movements via a website.

It's the mark of the beast, I tell you.

No corporation would ever own my ass to the extent that I'd permit them to chip it.

edit to add: Digital Angel does have a GPS "solution".
__________________
wolf eht htiw og

"Conspiracies are the norm, not the exception." --G. Edward Griffin The Creature from Jekyll Island

High Priestess of the Church of the Whale Penis

Last edited by wolf; 07-23-2007 at 01:36 PM. Reason: linkage
wolf is offline   Reply With Quote
Old 07-23-2007, 01:46 PM   #2
glatt
 
Join Date: Jul 2003
Location: Arlington, VA
Posts: 27,717
According to the rfid journal
Quote:
What is the read range for a typical RFID tag?
There really is no such thing as a "typical" RFID tag, and the read range of passive tags depends on many factors: the frequency of operation, the power of the reader, interference from other RF devices and so on. In general, low-frequency tags are read from a foot (0.33 meter) or less. High-frequency tags are read from about three feet (1 meter) and UHF tags are read from 10 to 20 feet. Where longer ranges are needed, such as for tracking railway cars, active tags use batteries to boost read ranges to 300 feet (100 meters) or more.
So I was wrong about my snarky inches to feet comment. A RFID tag will transmit about as far as a shouting human voice.
glatt is offline   Reply With Quote
Old 07-23-2007, 04:42 PM   #3
TheMercenary
“Hypocrisy: prejudice with a halo”
 
Join Date: Mar 2007
Location: Savannah, Georgia
Posts: 21,393
Quote:
Originally Posted by glatt View Post
According to the rfid journal


So I was wrong about my snarky inches to feet comment. A RFID tag will transmit about as far as a shouting human voice.
I assure you that we are talking only about a technological glitch would could be overcome by some very smart people in high places.
__________________
Anyone but the this most fuked up President in History in 2012!
TheMercenary is offline   Reply With Quote
Old 07-23-2007, 07:34 PM   #4
glatt
 
Join Date: Jul 2003
Location: Arlington, VA
Posts: 27,717
Perhaps a very long range RFID will be invented in the future. You may be right, you may be wrong.

But...

You're either going to have a lot of low powered transmitters like we have today, or a few high powered ones. You're not going to have an army of high powered transmitters all broadcasting simultaneously. The interference would be too overwhelming.
glatt is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 10:45 PM.


Powered by: vBulletin Version 3.8.1
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.