Schlage 8643T DESFire EV3 Multi-Technology Thin Keyfob — High-Security Credential for Chicago

Schlage 8643T DESFire EV3 Multi-Technology Thin Keyfob

The Schlage 8643T is a high-security multi-technology thin keyfob from Allegion’s Schlage credential lineup — combines 125 kHz proximity capability AND 13.56 MHz contactless smart card with DESFire EV3 in one credential. Pre-encoded by the manufacturer with the project’s selected format, facility code, and number range so the keyfobs arrive ready to deploy. Sold in 100-fob packs.

What’s Confirmed by the Schlage / Allegion Spec

These specifications come from Allegion’s published 8643T product documentation:

• Frequencies: 125 kHz proximity AND 13.56 MHz contactless smart card
• Smart standard: DESFire EV3
• Bit format options: 26A (125 kHz standard), 32X, 34N, 34S, 36X, 37X, 48X
• Encoding: Pre-encoded with manufacturer-selected format, facility code, and number range
• Pack quantity: 100 fobs per box
• Form factor: Multi-technology thin keyfob

8643T vs. 8843T — Standard DESFire vs. MIFARE DESFire

Allegion offers two DESFire EV3 multi-technology keyfobs in the same product family. The 8843T is the higher-tier variant:

Feature	8643T (this page)	8843T
Smart-card standard	DESFire EV3	MIFARE DESFire EV3 (4K byte / 32K bit)
125 kHz Prox compatibility	Yes	Yes
Bit formats	26A / 32X / 34N / 34S / 36X / 37X / 48X	(per Allegion documentation)
Best fit	Standard DESFire EV3 deployments	Premium high-security MIFARE DESFire EV3 environments
Relative cost	Lower	Higher

For most Chicago commercial DESFire deployments the 8643T is the right pick. Step up to 8843T when the project requires explicit MIFARE DESFire EV3 (4K byte / 32K bit memory) — typical for multi-application credentials and premium-security use cases.

Schlage Keyfob Family Comparison

Keyfob	Technology	Best Fit
9651T	MIFARE Classic 1K (single-tech)	Schlage smart-card-standardized properties
9691T	125 kHz Prox + MIFARE Classic	Phased Prox-to-Smart migration
8643T (this page)	DESFire EV3 multi-tech	Standard DESFire EV3 deployments
8843T	MIFARE DESFire EV3 (4K byte) multi-tech	Premium high-security

Where the Schlage 8643T Wins in Chicago

• Commercial properties standardizing on encrypted DESFire EV3 smart credentials
• Multi-tenant residential buildings on Schlage credential infrastructure with DESFire smart-card requirement
• Property management portfolios deploying DESFire EV3 across multiple buildings
• Hospitality back-of-house DESFire EV3 keyfobs
• Industrial / warehouse DESFire EV3 deployments
• Retail back-of-house DESFire EV3 keyfobs

Local Chicago Coverage

Vidimost installs and supplies the Schlage 8643T across the full city of Chicago for DESFire EV3 commercial smart-credential deployments.

Recommended Pairings

• Schlage 8843T — premium MIFARE DESFire EV3 sibling
• Schlage 9651T / 9691T — MIFARE Classic alternatives for non-DESFire deployments
• Schlage MT15 / MTB15 — Schlage MT-series readers that work with the 8643T’s multi-tech credential mix

Professional Installation by Vidimost

Vidimost LLC supplies the Schlage 8643T across Chicago for DESFire EV3 commercial deployments. Full-scope service includes site walkthrough, bit-format and facility-code coordination, pre-encoding workflow with Allegion, and deployment to authorized users in 100-fob pack quantities. Contact us for a free site walkthrough and quote.