YinkoShield — Execution Evidence Infrastructure.
The device-bound execution-evidence layer for digital payments. The product line that came out of thirteen years of Yinkozi's engineering practice. In production at scale across 30M+ endpoints since 2019.
Backend systems prove receipt. YinkoShield proves execution.
Banks and payment processors have backend evidence that a transaction was received and processed. They have very little evidence that the transaction was actually executed by the legitimate device, in the legitimate context, at the legitimate moment.
That gap — the unobserved interval between the user's intent and the bank's record — is where mobile and POS fraud lives. Overlay attacks, SIM swap, terminal compromise, agent collusion, runtime tampering. The bank sees the receipt but not the execution.
YinkoShield closes that gap by putting a signed, device-bound evidence layer at the moment of execution. The published specification is YEI-001 — Execution Evidence Infrastructure. Operator-side verification, sovereign deployment, no vendor in the trust path.
Initial roll-out at a tier-1 South African bank. The deployment that proved the architecture at scale.
Mobile, POS, and SST estates. Continuous evidence generation in production today.
Including low-end Android devices, agent-banking terminals, and legacy POS hardware. Built to handle the real device fleet.
A product is not a service.
YinkoShield is a category-level technical specification — Execution Evidence Infrastructure — and a set of reference verifiers and integrations. It is published, supported, and operated as a product, with its own lifecycle, versioning, and sovereign-deployment model.
That deserves its own surface. The technical depth of YinkoShield (the YEI-001 specification, the Knowledge Center, the architecture deep-dives, the verifier reference implementations) lives at yinkoshield.com.
Yinkozi is the contracting entity, the engineering practice, and the parent organisation behind it.
The full picture lives at yinkoshield.com.
Architecture deep-dives, the published YEI-001 specification, knowledge-center research, deployment reference architectures, and contact for spec-access requests.
Visit yinkoshield.com