EMV Tag Dictionary Explorer
Filterable EMV tag directory — every tag you encounter in SELECT, GET PROCESSING OPTIONS, READ RECORD, GENERATE AC, and the terminal/card capability fields. Type a hex tag or a substring of the name.
Filter
Tags
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All decoding runs locally.
About EMV tags
EMV tags are BER-TLV encoded. The leading byte indicates the tag class (universal / application / context-specific / private) and form (primitive / constructed). Many EMV tags are 2-byte (e.g. 9F26 for the application cryptogram). This directory covers the common contact and contactless flows.
Spec
EMV Books 3 and 4; EMV Contactless C-2 / C-3.
Companion
Reading
Future cornerstone: EMV transaction flow from first principles.