Rfid Reader For Mobile Devices

I've been asked to develop an app with the core functionality of reading RFID chips in pets and checking those identification numbers against a database through some web service.

Solution 1:

Before you start any work please familiarize yourself with this:

http://en.wikipedia.org/wiki/ISO_11784_%26_11785

and this: http://en.wikipedia.org/wiki/ISO_14223

RFIDs for animals are completely different protocol than NFC. It is more like UNIQUE tags (125kHz) . Anyway above ISO standards will be a good starting point for you.

Solution 2:

Android have native support for NFC, you don't need any bluetooth adapter or anything else:

http://developer.android.com/guide/topics/connectivity/nfc/index.html

Not all devices have it, but the major ones do have (e.g. galaxy nexus, nexus 4, galaxy S3, HTC One) and it works nice.

Solution 3:

Passive RFID tags primarily operate at three frequency ranges:

• Low Frequency (LF) 125 -134 kHz

• High Frequency (HF)13.56 MHz

• Ultra High Frequency (UHF) 856 MHz to 960 MHz

Smartphones today often support HF RFID