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_OLA _version 2.1.6 _revision 23819

Open L2 API interface is an abstraction of the card processing (alias L2), for EMV contact and EMV contactless system. It is based on a simple set of primitives to ease L2 integration onto a payment application (alias L3).

That set of primitives supports Nexo Fast’s structures and dynamics.

What is not covered by OLA interface is:

• Pin pad management: refer to manufacturer’s SDK to integrated use cases related to pin entry. Most of the time, proprietary callbacks must be defined using specific software signatures

• Transit features: use manufacturer’s SDK to realize transit use cases. For example, if using Agnos Framework, refer to Callbacks API.