Passive Wireless Sensor Platform
MagTag is a passive, wireless sensor technology designed for environments where traditional RFID, Bluetooth, and battery-powered sensors are limited by interference, cost, or maintenance constraints. Developed in collaboration with Sandia National Laboratories and Los Alamos National Laboratory, MagTag uses magnetic resonance principles to provide reliable asset identification and environmental sensing in the most demanding conditions.
Secure, Scalable Sensing for Complex Environments
How it works
MagTag operates without batteries or active electronics. Instead, it uses arrays of micromachined magnetostrictive resonators that vibrate at unique, precisely tuned frequencies when exposed to an externally applied magnetic field. These resonant signals are wirelessly detected by a nearby reader system, enabling:
Unique Identification
Each tag emits a complex frequency signature that is extremely difficult to counterfeit or replicate.
Environmental Sensing
Changes in frequency and amplitude can indicate variations in environmental conditions such as gas presence (e.g., hydrogen, H₂S), temperature, or pressure.
Unique Identification
Each tag emits a complex frequency signature that is extremely difficult to counterfeit or replicate.
Key Features
Completely Passive
Requires no batteries, wiring, or onboard power, reducing cost and enabling long-term deployments across multiple locations.
Interference Immunity
Operates in low-frequency magnetic domains, maintaining performance in metallic, shielded, or cluttered environments where RF-based tags fail.
Secure and Tamper-Resistant
Each tag’s resonator geometry is microfabricated and non-reproducible, making duplication or spoofing highly impractical.
Multi-Tag Capability
Unique frequency-domain encoding enables the simultaneous reading of multiple tags within a shared sensing space.
Radiation-Hardened by Design
With no active circuits or memory, MagTag is intrinsically resistant to radiation, making it ideal for nuclear and high-energy environments.
Applications
MagTag is engineered for integration into a wide range of use cases, including:
Nuclear Material Tracking
Long-term UID tagging in radiation-exposed containers
Hydrogen Infrastructure Monitoring
Real-time leak detection using Pd-functionalized resonators
Defense Logistics
Long-term UID tagging in radiation-exposed containers
Industrial Safety Systems
Sensing of gas leaks, thermal changes, or structural integrity without intrusive sensors or power requirements
Grid Resiliency Monitoring
Detection of fault currents and grid anomalies using resonant magnetic coupling
Integration and Customization
MagTag tags can be tailored for specific frequency profiles, environmental sensitivities, and mechanical form factors. The platform supports integration with external antennas, microcontroller-based readers, and cloud-connected IoT gateways. VastVision’s engineering team provides custom design, fabrication, and software support to deploy MagTag into your unique operational context.
Let’s Build the Future of Automated Asset Tracking Together - Schedule a demo today or request more information to discover how VastVision can revolutionize your operations.