Ankle Monitor Company — GPS Ankle Bracelet Manufacturer

Leading ankle monitor manufacturer serving corrections, pretrial, parole & probation agencies in 30+ countries. One-piece GPS ankle monitors with 7-day battery, fiber optic anti-tamper (zero false positives), and <3 second installation.

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CO-EYE Hardwares

Next-generation GPS ankle monitors and electronic ankle bracelets. Ultra-high security and reliability powered by 20 years of innovation in electronic monitoring technology.

CO-EYE ONE GPS Ankle Monitor

CO-EYE ONE

The lightest one-piece GPS ankle monitor at 108g. 7-day battery, fiber optic anti-tamper (zero false positives), multi-GNSS positioning under 2m accuracy.

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CO-EYE i-Bracelet/i-Tracker

CO-EYE i-Bracelet/i-Tracker

Two-piece GPS ankle bracelet and tracking unit for precision location monitoring. RF wristband pairs with portable tracker for continuous offender supervision.

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CO-EYE HouseStation

CO-EYE HouseStation

Advanced curfew monitoring with integrated cellular and Bluetooth, plus battery backup for continuous operation.

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bluetooth optical fiber wristband

CO-EYE Wristband

The smallest professional electronic monitoring anti-tamper wristband in the world — only 17g, virtually indistinguishable from a fitness band.

BLE and RF ankle bracelet options with 2-year battery life. Fiber optic tamper detection for GPS ankle monitor pairing with i-Tracker or HouseStation.

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CO-EYE Wristband CO-EYE Wristband Product Line
CO-EYE Monitoring Software Platform

ENSURING YOUR SYSTEMS SMARTER

Our Software is quick, lean, and market-focused.

A unified web-based platform with 13 modules for GPS ankle monitor management, offender tracking, zone alerts, and compliance reporting. Easily manage your electronic monitoring program at any scale.

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ONE-STOP MONITORING SOLUTION

Complete GPS Ankle Monitor Product Line for All Risk Levels

From high-risk GPS ankle monitors (CO-EYE ONE) to low-risk smartphone tracking (AMClient), our electronic monitoring product matrix covers every offender supervision need on a single unified platform.

CO-EYE Complete Product Matrix

ankle monitor solutions

Monitoring Solutions

Community Correction

Community Correction

 Bail Monitoring

Bail Monitoring

 Risk-Based Monitoring

Risk-Based Monitoring

 Prison & Jail

Prison & Jail

Why Choose CO-EYE GPS Ankle Monitors?

200,000+ devices deployed across 30+ countries. 7-day battery. Zero false tamper alerts. Under 3-second installation.

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200,000+

Devices Deployed

30+

Countries Served

20+

Years of Experience

0

False Tamper Alerts

REFINE Technology (CO-EYE) has been a professional ankle monitor company since 2004, providing GPS ankle monitors and electronic monitoring solutions to government agencies, corrections departments, and bail bond companies worldwide.

Ankle Monitor Knowledge Hub

Expert resources to help you understand, evaluate, and deploy electronic ankle monitoring technology.

What Is an Ankle Monitor?

Complete guide to ankle monitors: how they work, types (GPS, RF, alcohol), who wears them, costs, rules, and the technology behind modern electronic monitoring devices.

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GPS Ankle Monitor Procurement Guide

Technology comparison, vendor landscape, 10 evaluation criteria, RFP writing guide, cost analysis, and deployment best practices for corrections and pretrial agencies.

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Latest Resources

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South Korea police and justice ministry electronic monitoring command center with multiple surveillance screens for real-time stalking offender tracking

South Korea’s ₩4.2 Billion Bet on Real-Time EM Integration — What the Police-Justice Ministry System Merger Means for Global Stalking Response

On June 10, 2026, South Korea’s National Police Agency and Ministry of Justice announced a ₩4.203 billion ($3 million) project to merge their electronic monitoring systems into a single, real-time integrated platform — scheduled for completion by December 2026. The announcement came three months after a 44-year-old man wearing a GPS ankle monitor murdered his […]

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Bengbu Huaishang District Community Corrections Center and Justice Bureau building

REFINE Technology Deploys CO-EYE Electronic Monitoring System at Bengbu Huaishang District Community Corrections Center

REFINE Technology has completed the deployment of its CO-EYE electronic monitoring system at the Huaishang District Community Corrections Center in Bengbu, Anhui Province, China — extending the company’s domestic EM infrastructure to cover all enrollees under community corrections supervision in the district. The deployment was officially inaugurated at a formal ceremony hosted by the Huaishang […]

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HMP Wormwood Scrubs prison in London - UK government discusses subcutaneous microchip tracking for offenders amid prison overcrowding crisis

Microchips Under the Skin: Why the UK’s Dystopian Offender Tracking Proposal Reveals More About Prison Panic Than Technological Progress

On a weekday morning in May 2025, representatives from Amazon, Google, Microsoft, IBM, Palantir, and Serco filed into a TechUK conference room in London to hear a question from Britain’s Prisons Minister, Lord James Timpson: “What could a digital, data and technology-enabled justice system look like by 2050?” Among the responses — revealed only now […]

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