 visualizing rfid fields... |
  |
  Oct 13 2009, 03:15 PM
Post
#1
|
|
|
panda!  Group: Members Posts: 10,331 Joined: 8-March 02 From: north of central europe Member No.: 2,242  |
http://www.warrenellis.com/?p=7831
looks like a interesting bit of video, and it seems like the reader range is a bit shorter then i expected (altho a bigger antenna could probably fix that). btw, note the size of that circular tag, and that most of the circle is the antenna... |
 |
 
|
|
Oct 13 2009, 04:10 PM
Post
#2
|
|
|
Target Group: Members Posts: 37 Joined: 9-October 09 Member No.: 17,734 |
Strawberry RFID fields forever!
Very interesting clip there. Thank you for sharing it. |
|
|
|
|
Oct 13 2009, 04:10 PM
Post
#3
|
|
|
Target Group: Members Posts: 37 Joined: 9-October 09 Member No.: 17,734 |
Argh! Accidental multipost!
|
|
|
|
|
Oct 13 2009, 06:31 PM
Post
#4
|
|
|
Shooting Target Group: Members Posts: 1,706 Joined: 30-June 06 From: Fort Wayne, IN Member No.: 8,814 |
Quite interesting, indeed.
|
|
|
|
|
Oct 13 2009, 06:40 PM
Post
#5
|
|
|
Running Target Group: Members Posts: 1,263 Joined: 4-March 08 From: Blighty Member No.: 15,736 |
Perhaps it can help end some of the RFID paranoia - it certainly demonstrates that pretty sizable RFID Tags (compared to the SR4 Paranoiatags) have pretty small readable volumes.
|
|
|
|
|
Oct 13 2009, 07:25 PM
Post
#6
|
|
|
panda! Group: Members Posts: 10,331 Joined: 8-March 02 From: north of central europe Member No.: 2,242 |
well its not fully transferable to SR as the SR rfid range is based on the SR signal rating table...
|
|
|
|
|
Oct 14 2009, 09:29 AM
Post
#7
|
|
|
Runner Group: Members Posts: 3,009 Joined: 25-September 06 From: Paris, France Member No.: 9,466 |
That's NFC, which means "Near Field Communication". It's a subpart of RFID with some specifications, including a range inferior to 10cm.
That doesn't mean there aren't RFID tags out there with a much longer range (up to 100m IIRC). Longer range (and bigger payload) implies bigger energy use so tags with long ranges or which need to send a lot of data are often battery assisted. As for the size of tags and the amount of data you can store on it, I've got some circular NFC tags with a diameter of about 1cm (and not much thinner than a sticker). They can store up to 1kb, but there are probably 4k version out there. FeliCa (the ubiquitous Asian NFC Smartcard technology) can store up to 1Mb on a smartcard (the size of a regular credit card, maybe a bit thicker but not much). But most of the time, they'll just store an ID and the real data will be on a server somewhere so the storage size doesn't really matter. |
|
|
|
|
|
Lo-Fi Version | Time is now: 12th April 2025 - 08:24 PM |
Topps, Inc has sole ownership of the names, logo, artwork, marks, photographs, sounds, audio, video and/or any proprietary material used in connection with the game Shadowrun. Topps, Inc has granted permission to the Dumpshock Forums to use such names, logos, artwork, marks and/or any proprietary materials for promotional and informational purposes on its website but does not endorse, and is not affiliated with the Dumpshock Forums in any official capacity whatsoever.