Re: Anyone familiar with NFC/RFID?

[Roowilliams]

Hey Chris,

I'm no expert but I did a little research on them and successfully built a little RFID card reader that launches a browser to a web page the other week.

I used this http://www.ebay.co.uk/itm/121057801628?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649 with an Arduino, output a tag via serial to a Processing app which takes care of the rest.

It wont read my work door access card which I am assuming works on different frequencies, but so far it reads Oyster, my old UAL Student ID, contactless payment cards and some little RFID chips I ordered: http://www.ebay.co.uk/itm/370726992377?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

I'm not sure if what I am getting through serial is the actual tag, or something else, but it is unique and consistent so that's all I need right now.

I'm using an Arduino library to read it, I can't remember what it is, but I can tell you come Monday if you're interested.

Hope that helps a little.

Cheers

- Andrew

On Saturday, 16 March 2013 22:00:40 UTC, Chris Trotter wrote:

Hi All,

I have a project using QR that I'd like to move to RFID or NFC, but I'm not sure which readers/writers provide the best API and support for the various chips out there.

Can anyone put me in touch with someone in the hack space, or outside, who knows their stuff about RFID/NFC? Definitely a few drinks and lunch to be had as a reward.

Cheers,

Chris

[Benjamin Blundell]

Both ms7821 (Mark) and I have played a lot. RS offer a MIFARE chip that I've used, and the touch-a-tag reader is quite good. Nabaztag made something called "The Mirror" which you can probably grab off ebay. Sparkfun do a good range on the lower frequency types.

Generally, RFID has, obviously, an ID that is unique for sure, and if thats all you need then any reader will be fine. It gets more complicated when you start to read things from the memory locations - its gets more card specific and encryption is involved.

Software wise, look at python and pyscard (and rfidiot if you are feeling brave). I'd say go for a touch-a-tag reader for high frequency and a sparkfun ID-2 for low frequency. If you want to get into active tags thats a whole different ball-game.

--
You received this message because you are subscribed to the Google Groups "London Hackspace" group.
To unsubscribe from this group and stop receiving emails from it, send an email to london-hack-sp...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

[Big Will]

Hey Oni,

Sadly touch-a-tag (owned by Alcatel) stopped trading at the end of last year - http://store.touchatag.com/index.html  

However, the reader was just this rebranded - http://www.acs.com.hk/index.php?pid=product&id=ACR122U 

Chris - What type of computer are you going to use to run the RFID readers? and are you giving out the tags yourself? 

[Jasper Wallace]

On Sun, 17 Mar 2013, Benjamin Blundell wrote:

> Both ms7821 (Mark) and I have played a lot. RS offer a MIFARE chip that I've used, and the touch-a-tag reader is quite good. Nabaztag
> made something called "The Mirror" which you can probably grab off ebay. Sparkfun do a good range on the lower frequency types.
>
> Generally, RFID has, obviously, an ID that is unique for sure, and if thats all you need then any reader will be fine. It gets more
> complicated when you start to read things from the memory locations - its gets more card specific and encryption is involved.

Are you sure those readers give you enough access to do NFC? if you can
only get the card id then it's not going to be enough.

This will do it:

https://www.adafruit.com/products/789

but i'm not sure about the best software stack.

or get an android phone with NFC.

--
[http://pointless.net/] [0x2ECA0975]

[Mark Steward]

I bought a bunch for a small discount just before they stopped their website, and you can have one for £15.  They'll do NFC (again, not sure of a stack), but they're USB, so not suitable if you're already using an Arduino, for instance.

Mark

--

[Steve Jelly]

I've been playing with the Seeed Studio NFC shield v2 all this week... 

https://digitalmeans.co.uk/shop/nfc_shield-v2-sld01097p?keyword=no-ajax-mode

Super simple - had it up and running on my Mega2560 in minutes which allowed me to spend the rest of this week playing around with tag emulation, dynamic data, MIME etc

[Juan Calderon]

I've just bought a ACR122U reader.

http://www.ebay.com/itm/ACR122U-NFC-RFID-Reader-Writer-USB-SDK-Mifare-IC-Card-NFC-Tag-Android-HF-/150885914622?

Im testing out the idea so set this up for a sandwich shop where customers can order online and come in to pick it up from the the shop.

The big picture is customer walks in, flashes the oyster card and pushes the customers order on the screen.

I need help with getting whatever hardware is best to run an rfid to push a request to the webserver, eg, http://xxx.com/visitor.php?[RFID], in turn triggers the update to show the order on a back office screen.

Then also a registration process, same http://xxx.com/visitor.php?[RFID]?register , which will trigger the backoffice to choose a customer to assign the card to.

I have developers for the web side of things, just looking for someone who has the time, who's been there and done it. I dont mind considering other hardware if you have something similar and up an running.

Thanks for reading.

Juan