For decades, low-frequency 125 kHz proximity cards have been a staple in physical access control systems. They’re everywhere, from corporate offices to healthcare facilities and government buildings. But despite their widespread use, they’ve long had a major security gap: they were never designed with modern wireless threats in mind.
Until recently, protecting these cards was nearly impossible.
The Challenge with 125 kHz Prox Cards
Unlike higher-frequency smart cards (like 13.56 MHz), 125 kHz prox cards operate on a low-frequency signal that is notoriously difficult to block or shield. Traditional RFID-blocking solutions were effective for newer technologies, but not for these legacy credentials.
That means organizations using prox cards may be exposed to:
- Unauthorized reads from a distance
- Credential skimming without user awareness
- Increased risk of facility breaches
Blocking 125 kHz signals has historically been a challenge due to their longer wavelength and ability to penetrate materials more easily than higher frequencies.
Enter BloxProx: A Breakthrough in Low-Frequency Protection
ID Stronghold’s BloxProx technology changes the game.
With patented shielding and code-spoofing technology, BloxProx badge holders are specifically engineered to protect 125 kHz HID proximity cards, while also maintaining protection for 13.56 MHz smart cards.
Instead of allowing passive reads, BloxProx holders:
- Block unauthorized scans
- Reduce read range to intentional use
- Put the user in control of when their badge is read
This dual-frequency protection is especially important for organizations managing both legacy and modern credential systems.
Designed for Real-World Use
Security only works if people actually use it. That’s why BloxProx badge holders are designed to integrate seamlessly into everyday workflows.
Across the product line, users benefit from:
- One-handed badge presentation
- No need to remove cards from the holder
- Open-face options for easy ID visibility
- Durable materials for daily use
Whether in an office, hospital, or secure facility, these holders make security effortless.
Choosing the Right BloxProx Badge Holder
ID Stronghold offers multiple form factors to match different environments, preferences, and security needs.
Classic with BloxProx: Proven, Rugged Protection
The Classic BloxProx holder is the flagship solution, built for durability and maximum protection.
- Dual-frequency shielding (125 kHz + 13.56 MHz)
- One-handed badge presentation for scanning
- Rugged construction for long-term use
- Ideal for fast paced high-security environments
- Available in multiple colors
This is the go-to option for organizations that want a dependable, field-tested solution that performs in demanding conditions.
BloxProx Lite (Portrait): Slim and Lightweight
The BloxProx Lite Portrait holder delivers strong protection in a lightweight, streamlined design.
- Blocks both low-frequency and high-frequency RFID
- Rugged construction for long-term use
- Slim profile for comfort and convenience
- Durable co-polyester construction
- Available in multiple colors
It’s a great option for everyday users who want reliable protection without added bulk.
BloxProx Lite (Landscape): Lightweight, Horizontal Option
For users who prefer a horizontal badge layout, the BloxProx Lite Landscape offers the same trusted protection in a different orientation.
- Blocks both low-frequency and high-frequency RFID
- Lightweight and compact design
- Slim profile for comfort and convenience
This version ensures flexibility in how badges are worn while maintaining the same level of security.
Genesis™ with BloxProx™: Premium Magnetic Security
The Genesis badge holder represents the most advanced option in the lineup, combining premium materials with an innovative magnetic design.
Constructed from aluminum and stainless steel, Genesis uses a magnetic mounting system to secure the badge directly to clothing, eliminating the need for lanyards or clips.
- Blocks both low-frequency and high-frequency RFID
- One-handed badge presentation for scanning
- Magnetic closure keeps badge secure and aligned
- Compatible with standard cards and thicker clamshell prox cards
Users simply remove the card to present it, then let it snap back into a protected position.
Genesis is ideal for:
- Government and high-security facilities
- Professionals who want a premium, modern solution
- Environments where durability and presentation matter
Why This Matters Now
Even as newer smart cards gain traction, millions of 125 kHz prox cards are still in use worldwide. These systems often remain in place for years, making them a persistent and often overlooked vulnerability.
Adding BloxProx badge holders allows organizations to:
- Extend the life of existing access control systems
- Improve security without costly infrastructure upgrades
- Reduce the risk of unauthorized credential access
Take Control of Your Credentials
Access cards shouldn’t broadcast your credentials without your knowledge.
With BloxProx badge holders, they don’t.
From lightweight everyday options to premium magnetic solutions, ID Stronghold provides a full range of products designed to protect low-frequency prox cards in real-world environments.
Because when it comes to access control, security should never be passive.
