RFID/NFC Emulation
Emulate supported tag behavior to validate reader responses in controlled and authorized environments.
AUTHORIZED RFID / NFC RESEARCH
ChameleonUltra RFID & NFC Research Tool
A compact, open-source, and portable platform for RFID/NFC emulation, analysis, testing, and authorized security research.
VIDEO
Watch ChameleonUltra in action.
A quick visual overview of the device, its interface, and how the hardware is presented in practice.
PRODUCT OVERVIEW
A portable platform for practical RFID/NFC research.
ChameleonUltra gives engineers, researchers, and developers a compact way to emulate, test, and study RFID/NFC systems.
It is built for reader validation, troubleshooting, protocol analysis, and portable field workflows.
OVERVIEW
A compact tool for serious contactless work.
ChameleonUltra is a portable RFID/NFC research tool for emulation, analysis, and validation.
It supports troubleshooting, compatibility checks, learning, and authorized security workflows.
FEATURES
Core capabilities for contactless engineering and testing.
A focused toolset for emulation, protocol study, field testing, and authorized RFID/NFC validation.
Built to support engineers, researchers, and developers who need portable workflows without unnecessary complexity.
RFID System Testing
Exercise readers, locks, and embedded systems to observe compatibility, timing, and signal handling.
Tag Analysis
Study contactless card behavior, protocol interactions, and reader expectations during development work.
Authorized Backup Research
Investigate backup and duplication workflows for cards the operator owns or is explicitly authorized to assess.
HF & LF Research
Support both high-frequency and low-frequency research tasks for broader testing coverage across environments.
Portable Field Tool
A compact rechargeable form factor makes it practical for bench testing, audits, demos, and travel kits.
Open-Source Development
Firmware, software, and community-led workflows make it useful for experimentation and feature development.
Security Auditing
Use it to support approved auditing, troubleshooting, and validation of deployed RFID/NFC systems.
HOW IT WORKS
Three practical workflows.
Emulation
Emulate supported tag behavior to validate readers against repeatable test conditions.
Authorized Backup / Cloning Research
Study backup and duplication workflows for credentials you own or are authorized to evaluate.
Testing & Troubleshooting
Check reader behavior, compatibility, signal reliability, and protocol performance.
ENGINEER'S VIEW
From an Engineer’s Point of View
ChameleonUltra is an open-source RFID/NFC platform built for flexible development and field use.
Built around the NRF52840, it combines low power, BLE, USB, and enough memory for advanced workflows.
HARDWARE FRAME DIAGRAM
How the core hardware blocks fit together.
This simplified hardware view shows how power delivery, the NRF52840, RFID/NFC processing, antennas, and support components connect across the ChameleonUltra platform.
ULTRA VS LITE
Choose the platform that matches the depth of your work.
| Feature | ChameleonUltra | ChameleonLite |
|---|---|---|
| Target user | Researchers, engineers, auditors, advanced developers | General users, learners, lighter research needs |
| High-frequency support | Broad HF research and emulation focus | Core HF workflows |
| Low-frequency support | Includes LF research support | Reduced LF functionality |
| Emulation | Advanced and portable emulation workflows | Practical emulation for mainstream use |
| RFID testing | Deeper testing and troubleshooting flexibility | Basic validation and learning workflows |
| Developer features | Expanded open-source and hardware experimentation value | Simplified feature set |
| Security research features | Richer feature set for approved research tasks | Selected functions removed for broader-market positioning |
| Best use case | Portable lab for advanced RFID/NFC field research | Accessible entry point for everyday experimentation |
BUTTON FUNCTIONS
Current controls and planned standalone workflows.
RGB EFFECTS
Status lighting designed to be useful, not decorative.
Implemented effects include system startup, USB wake-up, button wake-up, field wake-up, shutdown, USB charging or communication, and card-slot switching animations.
Card slot colors communicate active simulation mode at a glance: red for IC simulation plus ID simulation, green for IC simulation only, and blue for ID simulation only.
KEY CAPABILITIES
Technical characteristics that matter in real use.
01Ultra-low power consumption
02Complete MIFARE-style data simulation research
03Strong compatibility with low-power readers
04Ultra-fast response speed
05Low interaction delay
06Large RAM for advanced research workflows
07RFID ferrite magnetic tile design
08High-frequency and low-frequency simulation support
09USB Type-C connection
10Portable rechargeable battery
WHY NRF52840
A strong low-power foundation for portable RFID research.
NRF52840 brings NFC Tag-A capability, strong performance, and low power use in a compact embedded platform.
It also provides BLE 5.0, USB 2.0 FS, and enough RAM and flash for iterative firmware work.
HISTORY
From ChameleonMini to ChameleonUltra
ChameleonUltra builds on the ChameleonMini legacy with newer hardware, better performance, and broader research capability.
RESEARCH ECOSYSTEM
Useful alongside Proxmark-style tools.
Proxmark-style tools are strong for reading, writing, and analysis. ChameleonUltra adds portable emulation and field testing.
TECHNICAL SPECIFICATIONS
Reference values for hardware planning and evaluation.
| Battery type | 302020 rechargeable lithium-ion battery |
|---|---|
| Charging time | 2 hours from 0–100% |
| Charging current | 50mA max |
| Battery capacity | 90mAh |
| Port type | USB Type-C |
| Standby current | 2.35mA @ 4.15V dual-frequency card slot, 1.75mA @ 4.15V single-frequency card slot |
| Simulation current | 7.2mA @ 4.15V MF1 card simulation period average |
| Sleep current | 5.1uA @ 4.15V mean 30 seconds after dormancy |
| Card reading current | 23.02mA @ 4.15V HF 14A info during execution |
| Usage time | Up to 6 months depending on usage |
Specifications may vary by hardware revision and firmware configuration.
WHERE TO BUY
Find ChameleonUltra through trusted sourcing channels.
No cart or checkout here. This section is reserved for official distributors, regional partners, and future availability updates.
Official Store
Reserved for direct project availability or an official storefront announcement.
Coming SoonRegional Distributors
Space for trusted regional partners when purchasing and fulfillment details are finalized.
Coming SoonCommunity Channels
Placeholder for community-approved sourcing information, announcements, or limited release updates.
Coming SoonOPEN SOURCE
Open tools for community-driven development.
ChameleonUltra benefits from open firmware, software, documentation, and community testing.
It is well suited to contributors exploring hardware behavior, protocol handling, and tooling.
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FAQ
Common questions.
It is a compact open-source tool for RFID/NFC emulation, analysis, testing, education, and authorized security research.
ChameleonLite is a more economical version of ChameleonUltra with some lower-frequency and penetration-testing oriented functions removed.
It is aimed at engineers, security professionals, researchers, developers, educators, and hobbyists working with RFID/NFC systems.
Yes, but only for authorized testing, system validation, and lawful research within approved environments.
Yes. The platform is positioned around open-source firmware, software, and community-led development.
Yes. ChameleonUltra is presented as supporting both high-frequency and low-frequency research workflows.
Responsible use means only working with systems and credentials you own or are explicitly permitted to evaluate, while following applicable laws and policies.
CONTACT
Get Involved
For documentation, development, or research collaboration, contact the project team.
team@rfidresearchgroup.com