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125 kHz Proximity Credentials

Schlage proximity credentials utilizing low frequency (125 kHz) technology provide a legacy access solution for existing installs in traditional facilities and businesses. 


Want to learn more about migration paths to more secure technology? Connect with an Allegion team member for help.


Proximity credentials provide a convenient access control solution for facilities with less demanding security needs. They are compatible with most industry-leading proximity readers, allowing them to easily integrate into existing proximity access control systems. Schlage offers a variety of credential formats to support a broad range of access control applications. 

Many organizations still depend on the legacy technology they invested in decades ago, like magnetic stripe or low frequency proximity cards. Newer technology is available that’s encrypted and less vulnerable to security breaches. Learn more about the credential technologies available. 

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For frequently asked questions, educational resources and technical product materials visit the Credentials 101 page. 


  • 125 kHz proximity technology available in multiple form factors
  • Compatible with Schlage and other industry manufacturers’ readers and electronic locks
  • Easily integrates into existing proximity systems



  • CardTrax™ account tracking program helps keep track of card numbers at no additional cost
  • Lifetime warranty against manufacturer’s defects



  • Custom artwork and laser engraving are available
  • All credentials are composite, making the credential much more durable


Looking to migrate from proximity? Consider multi-technology credentials. 

Schlage® multi-technology credentials are extremely flexible. Particularly useful during a transition from proximity technology to smart technology, this card can be read by both proximity readers and smart readers, which allows customers to economically migrate to the latest in smart technology at their own pace.

The credentials come in several models in various form factors and capacity options. View the data sheet to see all options.


Form factors

  • Clamshell - Highly durable and ridged, ideal for harsh environments 
  • ISO glossy white - Similar in size and thickness to a credit card, ideal surface for printing custom artwork and images for identification
  • Magnetic Stripe ISO glossy white - ISO style card that also includes a magnetic stripe
  • Key fob - Conveniently attaches to any key ring 
  • Thin key fob - Thinner style form factor for key ring applications 
  • PVC adhesive disc - Round disc can be adhered to any frequently used surface 

Credential Technology

  • Proximity credentials 
  • 125 KHz frequency 



  • No encryption



  • Contactless 
  • Read range up to 4-5″

Smart vs. Prox - Making the switch



  • Data is stored but not encrypted
  • Rigid storage that can’t be changed
  • Can only store one number
  • Slower communication speed
  • Easily duplicated



  • Data is stored and encrypted
  • Has dynamic storage that can be changed
  • Can store a variety of data
  • Faster communication speed
  • Difficult to duplicate


With Schlage® multi-technology readers and multi-technology credentials, you can transition systems from an existing population of magnetic stripe or proximity cards to more secure smart card technology at your own pace. 

Consult your Allegion representative

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Get the resources you need to get in touch with an Allegion team member for Schlage replacement parts.


Additional Resources

Did You Know?

Walter Schlage patented the first “smart home” device in 1909—a door lock that also turned the home’s lights on and off.

Case Study

Allegion Viewpoints

Implementing a more secure credential - The path to more secure credential technology

There are many reasons why campuses might consider upgrading their credential technology. However, some are not sure where to start or they don’t know what they need to make the transition. Outlining a clear, strategic migration path from your current state to your college’s ideal future state helps.

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As part of Allegion’s family of pioneering brands, Schlage benefits from the strength, efficiencies, resources, and integration from a global power. In turn, we pass those advantages on to you.

Allegion helps keep people safe and secure where they live, work and visit. With more than 30 brands sold worldwide, we specialize in security around the doorway and beyond. It’s the power of one.

Get the latest on door hardware, credentials and electronic access control from Schlage.