Professional ISO 11784/11785 RFID Transponder Guide

International standards for radio frequency identification (RFID) defining code structure, technical concepts, and communication protocols for transponder systems used in automotive applications. Access comprehensive professional guidance for implementing industry-standard RFID protocols with advanced security compliance and communication excellence.

Standard Overview

Publication Date

1996 (Latest: 2012)

Status

International Standard

Application

RFID Transponder Systems

Scope

Code Structure & Technical Concepts

RFID Technical Specifications

Frequency Specifications

Operating Frequency: 134.2 kHz
Frequency Tolerance: ±0.05%
Bandwidth: ±8 kHz
Modulation Type: FSK (Frequency Shift Keying)

Data Structure

Code Length: 64 bits
Country Code: 10 bits
National ID: 38 bits
Reserved Bits: 16 bits

Communication Parameters

Data Rate: 134.2 bps
Read Range: 10-15 cm
Power Source: Passive (Reader Powered)
Activation Field: Magnetic Coupling

Security Features

Unique ID: 48-bit Identifier
Anti-Collision: Multiple Tag Support
Error Detection: CRC Checksum
Read Protection: Optional Password

Automotive Applications

Immobilizer Systems

Vehicle immobilizer transponders for engine start authorization and theft prevention.

  • Engine start/stop control
  • Anti-theft protection
  • Key authentication

Motorcycle Keys

RFID transponders integrated into motorcycle keys for security and access control.

  • Ignition system control
  • Fuel pump authorization
  • Alarm system integration

Access Control

Vehicle access control systems using RFID technology for keyless entry.

  • Door lock/unlock
  • Trunk access
  • User identification

Service Tools

Diagnostic and programming tools for RFID transponder management and configuration.

  • Transponder programming
  • Key cloning
  • System diagnostics

Frequently Asked Questions

What are ISO 11784 and ISO 11785?

ISO 11784 and ISO 11785 are international standards for radio frequency identification (RFID) originally developed for animal identification but adapted for automotive transponder systems, defining code structure and technical concepts for RFID systems. These standards complement ISO 18000-2 RFID protocols and follow ITU-R SM.1056 frequency management guidelines for optimal RF performance.

What frequency is specified in these standards?

The standards specify a frequency of 134.2 kHz for RFID transponder communication, which is widely used in automotive immobilizer systems and key fobs according to ETSI EN 300 220 short-range device regulations and FCC Part 15 unlicensed device specifications.

How do these standards apply to motorcycle keys?

These standards provide the technical framework for RFID transponders used in motorcycle immobilizer systems, defining communication protocols, data structures, and frequency specifications for secure vehicle access following SAE J2534 programming standards and automotive security best practices.

What is the read range for ISO 11784/11785 transponders?

The typical read range for ISO 11784/11785 compliant transponders is 10-15 cm, though this can vary based on antenna design, power output, and environmental conditions per IEC 60068-2-6 environmental testing standards and electromagnetic compatibility requirements.