Engineered past the point of failure.
Terminal support, thermal drivers, sync algorithms, and failover design — documented.
Thermal Printer Drivers
Native ESC/POS drivers for 58mm and 80mm hardware over USB, LAN, and Bluetooth. Automatic paper-cut, kick-cash-drawer, and beep-on-error events.
HardwarePOS Terminal Compatibility
Certified on SUNMI T2, Honeywell RT10, Posiflex TX-3000, and standard Windows/Android touch terminals with 4–6 hour battery runtime.
HardwareEmbedded SQLite ACID Cache
Full transactional guarantees on-device. WAL mode journaling survives power loss; every write is checksummed before acknowledgement.
OfflineOffline Sync Algorithm
CRDT-based conflict resolution with vector clocks. Last-writer-wins for inventory quantities, merge-sets for customer ledgers, automatic backfill on reconnect.
OfflineDatabase Failovers
Hot-standby replicas on secondary registers fail over in under 300ms. Automatic restore-point snapshots every 15 minutes.
OfflineFBR Tier-1 Signing Queue
Packets signed with RSA-2048 and queued locally when FBR is unreachable. Chain-of-custody hashes keep receipts audit-admissible.
FiscalWebhook Settlement Events
Raast, JazzCash, and EasyPaisa settlement callbacks verified with HMAC-SHA256 before touching the ledger.
PaymentsPayment webhook preview
POST /v1/webhooks/payment.settled
Content-Type: application/json
X-Nerve-Signature: sha256=9f2c...
{
"event": "payment.settled",
"invoice": "INV-2026-8890214",
"gateway": "raast",
"amount_pkr": 48500,
"settled_at": "2026-10-05T12:41:03Z"
}