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8 selected articles

Detecting presence (arrival/departure) with active RFID tags

up vote 11 down vote accepted

+50

As a top level statement, if you need to track items leaving your site, your RFID technology is probably the wrong one. The technology you have is better suited to the positional tracking tags within a large area - eg a factory floor. Notwithstanding the above, here is my take:

A good approach to active RFID is to break your area down into zones that are tied to...

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HF-RFID vs. NFC - Can an NFC-enabled mobile phone read ...

up vote 9 down vote

NFC does not only share the same frequency band (13.56 MHz) but it is based on HF-RFID standards.

Specifically, the NFC interface protocol standard (ISO/IEC 18092 / NFCIP-1) uses components from the RFID standards ISO/IEC 14443 (Type A) and JIS X 6319-4. This essentially merges the technologies MIFARE (by NXP) and FeliCa (by Sony). In addition ISO/IEC 21481 (NFCIP-2) defines...

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arduino - RFID-RC522 not reading card - Stack Overflow

up vote 0 down vote favorite

I have a RFID-RC522 (MF-RC522) module and I'm using Arduino sketch program. I have downloaded the Example code:

/* * -------------------------------------------------------------------------------------------------------------------- * Example sketch/program showing how to read data from a PICC to serial. *...

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Related topics : rfid card reader serial arduino / rfid card reader serial output / rfid tag reader arduino / rfid reader module arduino / rfid card reader serial

c# - Trouble with RFID - reading program - Stack Overflow

up vote 1 down vote favorite

I am new to programming RFID - readers. I have Motorola MC9090G1, my task - read RFID - tag and write it down in the list. In Motorola EMDK for .NET is an example of that is my goal. But the problem is that the addition to the list of tags is not instant and a significant delay (15-30sec). How to fix it?

Here is the code:

/// The main entry point for the...

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Related topics : motorola symbol rfid readers / symbol rfid reader / read write rfid tags / how to read rfid tag / rfid tag reader system

Reading NFC Tags with iPhone 6 / iOS 8 - Stack Overflow

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I've designed several NFC readers and based on what I've seen from the teardown, studying the layout, and observing how the iPhone6 behaves over NFC, that is my opinion. I haven't physically dissembled an...

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Related topics : read write rfid tags / passive rfid tag read range / nfc vs rfid tags / rfid tag read range / how to read rfid tag

Reading NFC Tags with iPhone 6 / iOS 8 - Stack Overflow

2

 

I'm not a hardware guy, but is there a chance the iPhone teardown didn't show everything? Is this the final analysis? Impossible to read passive NFC tags? -  Salaryman Nov 1 '14 at 20:40

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I've designed several NFC readers and based on what I've seen from the teardown, studying the layout, and observing how the iPhone6 behaves over NFC, that is my opinion. I haven't physically dissembled...

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Related topics : read write rfid tags / how to read rfid tag / tag rfid nfc

c# - How to read from a usb rfid reader? - Stack Overflow

up vote 3 down vote accepted

This is what I did when I had the same problem.

using System; using System.Text; using LibUsbDotNet; using LibUsbDotNet.Main; namespace Examples { internal class ReadPolling { public static UsbDevice MyUsbDevice; #region SET YOUR USB Vendor and Product ID! public static UsbDeviceFinder MyUsbFinder = new UsbDeviceFinder(1234, 1); #endregion ...

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Related topics : usb rfid reader / rfid reader input or output device

javascript - Real time GPS Tracker on JUST HTML / JS and ...

up vote 33 down vote accepted

Yes, it is possible. Most browsers in the latest smartphones have implemented the W3C Geolocation API :

The Geolocation API defines a high-level interface to location information associated only with the device hosting the implementation, such as latitude and longitude. The API itself is agnostic of the underlying location information sources. Common sources of...

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Related topics : gps + gsm + rfid - real time tracking systems