Card (ICC)Format: ansLength: ≤76
56

Track 1 Data

Tag ID
56
Format
ans
Length (bytes)
≤76
Source
Card (ICC)

What it is

Track 1 data (ISO/IEC 7813 structure B, without start/end sentinels and LRC) held in the chip; used in contactless mag-stripe mode (Book C-2).

Specification reference

Defined in: EMV 4.x Book 3 (Application Specification), Annex A — Data Element Dictionary