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.
Next-generation GPS ankle monitors and electronic ankle bracelets. Ultra-high security and reliability powered by 20 years of innovation in electronic monitoring technology.
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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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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Advanced curfew monitoring with integrated cellular and Bluetooth, plus battery backup for continuous operation.
Learn Morebluetooth optical fiber 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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CJIS-READY MONITORING PLATFORM
A CJIS-ready, zero-trust platform with court-admissible evidence reports, 13 modules for GPS ankle monitor management, offender tracking, zone alerts, and compliance reporting. ECDSA-signed data chain from device to courtroom.
Learn MoreONE-STOP MONITORING SOLUTION
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.
200,000+ devices deployed across 30+ countries. 7-day battery. Zero false tamper alerts. Under 3-second installation.
Get started today200,000+
Devices Deployed
30+
Countries Served
20+
Years of Experience
CJIS
Security Policy Ready
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.
Expert resources to help you understand, evaluate, and deploy electronic ankle monitoring technology.
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.
Read the complete guide →Technology comparison, vendor landscape, 10 evaluation criteria, RFP writing guide, cost analysis, and deployment best practices for corrections and pretrial agencies.
Read the procurement guide →
You’re evaluating GPS ankle monitor vendors. One offers a single device that does everything. Another offers a system: ankle tag plus portable tracking unit plus home base station. The two-piece vendor quotes 20% lower on hardware. Your procurement team leans toward the cheaper option. Twelve months later, your officers are spending 35% of their shift […]
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The quote says $8 per device per day. Your finance director approves the contract. Eighteen months later, your actual cost-per-enrollee is $14.60 — and nobody can explain where the extra $6.60 went. It went into charger replacements for batteries that degraded after 8 months of deep-cycle abuse. Into overtime hours responding to false tamper alerts […]
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Most GPS ankle monitor procurement decisions start and end with a spec sheet. Weight, battery hours, IP rating — checked, checked, checked. Yet 18 months later, the same agency is drowning in false tamper alerts, managing a fleet of devices that can’t hold a charge past Tuesday, and facing a courtroom challenge because the vendor […]
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