Remote Key Injection is Ingenico’s secure, over‑the‑air method for loading cryptographic keys (AES, DES, TDES, HMAC, etc.) into payment terminals from a central Key/Mass server. Instead of a technician physically inserting keys on‑site (Local Key Injection – LKI), the keys are delivered through an encrypted channel to the device, using hardware security modules (e.g., Thales PayShield 10K) and role‑based, dual‑control workflows.