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TTQ Decoder

Decode EMV Tag 9F66 — Terminal Transaction Qualifiers — bit-by-bit per EMVCo Book C-3

🔍 Input

Enter an 8-character hex string (4 bytes). Spaces are OK.

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📖 About This Tool

What is the TTQ Decoder?

The TTQ Decoder interprets Terminal Transaction Qualifiers (EMV Tag 9F66), a 4-byte value used in Visa payWave contactless transactions to indicate terminal capabilities and transaction preferences.

🛠️ How to Use
  1. Enter the 8 hex character TTQ value (Tag 9F66).
  2. Click Decode to see each bit flag.
❓ FAQ

What is TTQ?

TTQ (Terminal Transaction Qualifiers, Tag 9F66) is a Visa contactless-specific tag that indicates terminal capabilities such as MSD/qVSDC support, online cryptogram requirements, CVM requirements, and issuer update processing support.