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POS Payment Applications

EMV payment applications for smart POS terminals — built by engineers who know each vendor's SDK, kernel quirks and certification path from experience.

Terminal platforms we have shipped on

IngenicoPAXSunmiNexgoKozenMiuraDspreadFeitianUrovoBBPOS+ more
What We Build

The Full Transaction Lifecycle, on Real Hardware

From sleek Android smart terminals to traditional Linux devices, we develop applications that handle every transaction type your acquiring business needs — engineered to port cleanly across your terminal estate.

  • EMV contact & contactless (NFC)Chip, tap, magstripe fallback and QR acceptance flows
  • Complete transaction setPurchase, refund, void, reversal, pre-auth, completion, tip adjust, settlement
  • Security & key managementPIN entry, DUKPT and master/session key schemes
  • Terminal managementRemote updates, parameter downloads, RKI and estate management
  • Value-added servicesDCC, loyalty, digital receipts and merchant apps alongside payments
Discuss Your Terminal Project
txn — authorization
MTI        : 0100
PAN        : ************4242
AMOUNT     : 000000012500
STAN       : 003741
ENTRY MODE : 071 — Contactless EMV
FIELD 55   : 9F26 08 A1B2C3D4…
─────────────────────────
RESPONSE   : 00 — APPROVED ✓
Why Deazitech

Why Acquirers and PSPs Choose Us

10+ Vendor Platforms

We've already shipped on the hardware you're targeting — no SDK learning curve on your bill.

Switch-Ready by Design

Our apps are built with the host integration in mind — see our switch integration service for the other half.

Certification Built In

L3 testing with UL BTT and FIME tools is part of our delivery, not a hand-off — see L3 certification.

Launching or Porting a Payment Application?

New acquiring product, additional terminal vendor, or a stalled certification — tell us where you are and we'll map the fastest route to market.

Request a Quote