ECSG Volume working groups were assigned by the Board to perform an analysis on the issues related to the implementation of RTS SCA for proximity low value amount transactions. An inventory of market implementations was collected and four possible transaction flows were identified (decline; switch interface; re-present card and enter PIN; enter pin without a second tap). Based on this analysis, it was decided to update Req. T77 in Book 2 and to publish an informative Bulletin on ECSG website before RTS SCA coming into force.
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