A Level 2 kernel answers "does this software follow EMV?". Level 3 answers "does this terminal, configured like this, connected to this acquirer, process this brand's cards correctly end to end?". The kernel is one component; Level 3 tests everything around it.
From kernel to certified terminal
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What Level 3 adds over Level 2: application logic, host messages, receipts and brand rules.
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The opening of the article
In the full article
- What Level 3 adds
- Who does it
- Typical sequence
- Why terminals fail Level 3 with a certified kernel
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