Hi, I've read a book about rfid and i've some questions about (i'm totally a newbie in this field): 1. a standard for active rfid at...

Hi, I've read a book about rfid and i've some questions about (i'm totally a newbie in this field): 1. a standard for active rfid at 433MHz-850/950MHz-2,4GHz is present or not? 2. I've read about active rfids based on zigbee (or wifi): i don't understand why i should use a zigbee/rfid combination and not only zigbee...EPC and other related data could be saved on end device's memory, so i s...

Hi, I want to write my PC application able to work with RFID devices and i'm looking for an SDK able to: 1. Write RFID card registers 2....

Hi, I want to write my PC application able to work with RFID devices and i'm looking for an SDK able to: 1. Write RFID card registers 2. Compatible with MIFARE CLASSIC/ULTRALIGHT, FELICA, DESFIRE 3. Compatible with windows8 and linux 4. Good support with API and documentation 5. Compatible with open stacks (for example with openNFC) Point 5 is not strictly necessary but preferable. An...

The Chargepoint cards used to activate the Chargepoint EV charging stations without a cellular connection use RFID tags - you just swipe...

The Chargepoint cards used to activate the Chargepoint EV charging stations without a cellular connection use RFID tags - you just swipe them in front of the stand and the plug unlocks. It's one of those ideas seems cool in theory, except that the RFID tag keychain cards they provide are very filmsy, and if you leave them in your pocket for any length of time the lamination comes ap...

Anyone here well versed in RFID design and integration?

Anyone here well versed in RFID design and integration?

I have an application in which RFID tags need to respond and send data while at very cold (10 deg F to -30 deg F) temperatures. They will have...

I have an application in which RFID tags need to respond and send data while at very cold (10 deg F to -30 deg F) temperatures. They will have been put in place for up to one year. While not exactly the application, it's as if I were attaching RFID tags to the entrances of Arctic Fox dens - a very cold environment with the possibility of deep and total snow cover. Readers would be protecte...

For example -there is a 30*30 meter warehouse with a lot of metallic products- to ensure fast and reliable reading does one go for a...

For example -there is a 30*30 meter warehouse with a lot of metallic products- to ensure fast and reliable reading does one go for a dense reader deployment with reader controllers, or metalic rfid tags in normal reader configuration could do the job. How about a wi-fi system or a case when you have temp sensor in tag?

Joerg, maybe this will interest you: RFID tags stop medical equipment: ...

Joerg, maybe this will interest you: RFID tags stop medical equipment: http://www.heise.de/newsticker/Studie-RFID-Systeme-beeinflussen-Medizintechnik--/meldung/109971 /from/atom10 List: http://www.amc.nl/?pid=5266

Good morning, once more i ask for some little help. An item has to be sent to a potential customer,that could became a potential...

Good morning, once more i ask for some little help. An item has to be sent to a potential customer,that could became a potential competitor. Inside a part ,an RFID tag is buried,and i would like that nobody else could read the data in the tag. I tried unsuccessfully to destroy it in 2 ways: 1)An hobbystic Royer oscillator,tuned on the frequency of the tag(125 KHz) 2)An EMP pulse,abou...

Hi, I want to learn how to design RFID antenna. Do any one could help me out with this. Thanks. Chinthu

Hi, I want to learn how to design RFID antenna. Do any one could help me out with this. Thanks. Chinthu

Hello all, My passport is somewhere inside my apartment but for the life of I can't remember where. I have looked at all the obvious places...

Hello all, My passport is somewhere inside my apartment but for the life of I can't remember where. I have looked at all the obvious places and I could not find it. Now, this is a new "biometric" passport with the RFID chip inside. So I'm looking for a simple and most of all cheap circuit that could activate the RFID chip and so tell where (roughly) that little bugger is hiding. At l...

Disney theme park customers have special RFID bands, called MagicBand, helping them use the parks. A 13-month old Wired article called this a...

Disney theme park customers have special RFID bands, called MagicBand, helping them use the parks. A 13-month old Wired article called this a $1B bet on their MagicBands, but such an expenditure would have been more on the back end, rather than on the bands themselves. https://www.wired.com/2015/03/disney-magicband/ At the time, Disney was quite forthcoming with tech details, photos and t...

http://scanlime.org/2008/09/using-an-avr-as-an-rfid-tag/ The hacks are described, but the question is: why there is no MCU latch-up when any...

http://scanlime.org/2008/09/using-an-avr-as-an-rfid-tag/ The hacks are described, but the question is: why there is no MCU latch-up when any of the ends of the coil connected to the clock pins goes below GND? Best regards, Piotr

Someone told me the new US $100 notes have a built-in microchip, or RFID tag. Does anyone have further info on this? Martin King

Someone told me the new US $100 notes have a built-in microchip, or RFID tag. Does anyone have further info on this? Martin King

Hi all, Can anyone recommend a good book about how to connect different chips from different manufacturers into a single device? E.g.,...

Hi all, Can anyone recommend a good book about how to connect different chips from different manufacturers into a single device? E.g., an RFID reader from TI, a microprocessor from Intel, and a wireless transceiver from somebody else. I don't even know what to look for... I've searched for "Electrical Engineering" on Amazon, but those books only tell you how to make each individual pa...

I'm having a terrible time getting an air core coil wound for my RFID project. The big problem is that I simply don't know how to specify a...

I'm having a terrible time getting an air core coil wound for my RFID project. The big problem is that I simply don't know how to specify a coil, and the engineers at the magnetics company can't seem to help me fill in the blanks. Can anyone shed some light on how I should procede? I've told them I'd like a 750uH coil with a max OD of 40mm to fit our physical constaints. Exact DC resist...

Does any of you know if passive RFID will work close (3-4 meters) to high voltage power lines (275kVolt). I think yes since they work in FR...

Does any of you know if passive RFID will work close (3-4 meters) to high voltage power lines (275kVolt). I think yes since they work in FR frequencies and power lines have 60-50 Hz despite the strong electromagnetic fields. Do you agree???

Does anyone know of a good custom coil supplier in the US? I need some small (40mm OD) air core coils wound. It's an 125 kHz RFID antenna....

Does anyone know of a good custom coil supplier in the US? I need some small (40mm OD) air core coils wound. It's an 125 kHz RFID antenna. Say, either 2.5mH or 750uH, exact value and DCR negotiable and TBD. I'd like 5- 10 protos to test and tune with before ordering the first production run of 500. (I'm in a bit of a hurry, as well...) Here's an example of someone else's similar de...

Hi, I have an inkjet printer at hand that is able to print conductive silver ink. This is nice since you can easily try out...

Hi, I have an inkjet printer at hand that is able to print conductive silver ink. This is nice since you can easily try out different designs. Now I would like to print a 13.56MHz antenna for NFC. Does anyone know where I could download a layout file (EPS, PDF, CAD, ...) of some standard NFC antenna? I tried to find, but could not find any. By the way, the sheet resistance of the printed s...

My car's key takes a 2032 lithium battery. These keys are awesome: Never take the keys out of your pocket, either to open the door or to...

My car's key takes a 2032 lithium battery. These keys are awesome: Never take the keys out of your pocket, either to open the door or to start the car. After > half-decade of operation, suddenly without warning it stopped operating, whoa how to get stranded! Heck, I didn't even realize that my RFID required a battery! OK, yes with its long range that should have been clear

I am looking for a minimal hardware circuit to generate a 125 kHz sinusoidal wave to be fed into the power stage that is in turn feeding an...

I am looking for a minimal hardware circuit to generate a 125 kHz sinusoidal wave to be fed into the power stage that is in turn feeding an antenna. The wave is used to generate a carrier frequency for an RFID application. I was thinking of using this [ http://www.ecsxtal.com/store/pdf/ecs-31.pdf ] crystal in a Pierce Oscillator configuration. However I am not sure if this crystal will wor...