Programmer's Manual

The DynaFlex II SCR uses the shared DynaFamily Multi-Interface Card Reader Platform (MMS) command set. This manual is a device-scoped map into the API & Command Reference with the sections this device relies on linked below.

Applies to: DynaFlex II SCR

In this manual

Reference Section	Information Available
Command Support Across Products	The full device Command matrix, if you're building for more than one Dyna reader.
Message Format & Structure	How MMS requests, responses, and notifications are framed and parsed.
Data Types & Shared TLV Objects	The shared TLV and EMV objects the commands carry.
Commands	The MMS command set, scoped to the SCR, with a supported-commands view.
Notifications	Asynchronous messages the SCR sends during transactions, device events, and firmware updates.
Configurations	Configurable properties and parameters.
Status Codes & Responses	Result and error codes the device returns.

See Also

• Security & Keys --> How the SCR protects data and manages keys: DUKPT (3DES→AES), MAC, KSNs, encryption/decryption, and the PCI requirements like the 24-hour reset and device lock.

• Compliance--> The SCR's PCI PTS POI security policy, certifications, and the regulatory documentation for deployment.

• NFC/MIFARE -->Working with contactless cards and tags — NFC/MIFARE pass-through and the supported card technologies (NTag, Classic, DESFire, Plus).

Need Help?

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• 🌐 Support Portal: developer.magtek.com

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