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Table 1 Structure of single transaction’s trace

From: POS-originated transaction traces as a source of contextual information for risk management systems in EFT transactions

Pos. Meaning Details
1 Card’s token  
2 Card read type 2: magstripe
   3: contact EMV
   5: contactless magstripe
   6: contactless EMV
3 Transaction’s date Format: YYYYMMDD
4 Transaction’s time Format: HHMMSS
5 Transaction’s type 1: sale
   6: refund
6 Transaction’s amount  
7 Transaction’s trace Sequence of events from Table 2