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The Keri MS format remains one of the most widely used proprietary access control formats in commercial buildings, small businesses, apartment complexes, schools, and industrial facilities. Whether you're replacing lost credentials or transitioning to alternative suppliers, understanding compatibility is essential—especially when mixing Keri MS cards, Keri MS key fobs, Keri MS adhesive tags, and Keri MS wristbands.
If you’re unsure which credential type will work on your system, AuthorizID makes testing simple and risk-free.
Free samples to test are available: Contact us to request a free sample
Keri Systems developed the MS format as their native credential structure for legacy and modern Keri controllers, including:
The MS format uses its own encoding structure, facility code ranges, and decoding rules. This means that credentials must be specifically programmed to the Keri MS format—standard 26-bit cards won’t work unless the controller has been expressly configured for multiple formats.
Keri MS cards are the most frequently used option in the MS ecosystem. They offer:
AuthorizID provides MS-compatible printable cards, making it easy for organizations to customize badges while maintaining full decoder compatibility.
For facilities where employees prefer something more convenient than a full-size badge, Keri MS key fobs are an ideal alternative. Their benefits include:
Many property management groups and HOAs prefer key fobs because they’re harder to lose and easier to assign.
Adhesive tags allow you to convert nearly any existing card—such as an employee ID card or student badge—into a Keri MS-compatible credential without replacing your entire badge program.
Key advantages include:
This option is extremely helpful for businesses migrating from other card formats but not ready to reprint new badges.
If your business needs credentials that can be worn hands-free, Keri MS wristbands offer durability and convenience.
Popular in:
AuthorizID carries wristbands made with waterproof, sweat-resistant materials that withstand heavy daily use.
MS credentials—cards, fobs, tags, and wristbands—are compatible with all Keri MS-series readers, including:
These readers are designed specifically to decode the MS format at the hardware level, ensuring reliable performance and consistent read ranges.
The Keri MS format assigns:
When ordering replacements, matching your existing facility code and number range is essential to avoid card conflicts. AuthorizID specializes in replicating and expanding credential sequences to ensure compatibility with your current system.
AuthorizID offers:
Whether you’re managing a large residential community or a single commercial facility, we make sourcing Keri-compatible credentials simple and reliable.
Not sure which Keri MS credential will work best for your system?
Test before you buy—at no cost.
Free samples to test are available: Contact us to request a free sample
