MG236B RFID Controller Front Panel
MG236B RFID Controller Back Panel
MG236B RFID Tag
This is not a passive RF ID tag, but rather an active
transponder, similar in concept to the FasTrak
tool bridge unit. It's designed to be used in situations where
there are many similar transponders nearby, i.e. in a network of
transponders, like a warehouse.
There is a user replaceable LS 17500 3.6V battery.
Tx: 433.92 MHz, FSK dev +/- 50 kHz, 27.8 kbps, 300 meter range
Rx: 123 kHz, ASK On-Off Keying, 1.6 Kbps 50% duty cycle, Range: 4' or 12' depending on the Savi reader being used
Communication system for
communicating with tags, Texas
Instruments Incorporated, Jun 17, 1997
5686902 Communication system for communicating with tags, Texas Instruments Incorporated, Nov 11, 1997
FCC ID: KL7-654T-V2
|Fig 3 Serial port to allow programing the
NFC is another name for an RFID that can be activated using a
13.56 MHz CW signal. There is a problem in that every time
the NFC gets enough power it will send it's message.
This means someone can have a transmitter in a backpack, briefcase or in their clothes and if they can get close to you read your NFC data. If you're using your NFC like a credit card then they are capturing your credit card information. There are "Wallets" that block the CW signal and/or the signal from the credit card to prevent this abuse, but they are not a solution for a cell phone since blocking it's NFC capability probably also would keep it from receiving incoming calls.
I learned about this in relation to Google Cardboard (Official web page,
YouTube Intro) where they use an NFC tag to configure the phone
for virtual reality in landscape, turn off the information bars
and maybe start a VR app.
Electrify 2 (XT881) does not have NFC.
Also see NFC on my Cell Phone web page.
3054100 Signalling system, Clarence S Jones, General Precision, 1962-09-11, - active RF-IR, for railroad cars, RF triggers tag which responds with a number of frequencies which is the data.
3163860 Object identification system, Francis M Bailey, GE, 1964-12-29, - for freight cars - requires power at the freight car, but the principle is the same as modern RFID.
3169242 Identification interrogating system, Richard K Davis, Francis M Bailey, GE, 1965-02-09, - passive, for railroad cars, 8 fixed resonators in the range 510 to 600 kHz
3299424 Interrogator-responder identification system, Jorgen P Vinding, 1967-01-17, - inductive coupling of power to tag, VHF reply frequency, shift register for data in tag
3373425 Tunnel diode circuit utilized to control the reply of a passive transponder, Erwin E Barischoff, 1968-03-12, - passive RF-ID, but with no data, so limited use.
3706094 Electronic surveillance system, Peter Harold Cole, Richard Vaughan, 1972-12-12, -
3750167 Postal tracking system, J GehmanG Herlich, S Mikuteit, General Dynamics, 1973-07-31, - passive RF-ID. 900 MHz to power the tag.
Inside a Glasgow Subway RFID train ticket - disposable ticket - Confidex:
8794531 Radio frequency identification tag, Confidex Oy, Priority: 2006-07-13, Pub: 2014-08-05, -
RFID Locks are way too easy to "Hack"! Let me show you!, 11:40 -
FasTrak Vehicle ID Transponder - is an active transponder, not an RF ID tag.
Key, Object & Pet Location Tags -
Spying on Cell (Mobil) Phones
Orion Electronics Ltd. Cellular Base Station ST616-CBS
RFIDIOt - hacking toolsBack to Brooke's List of all web pages in alphabetical order, Products for Sale, Electronics, Home page
DEF CON 21 (2013) - RFID Hacking: Live Free or RFID Hard - how to read someone's card without them knowing and making a clone card to gain access to their building.
[an error occurred while processing this directive] page created 13 May 2010.