Non-interactive refers to processes or transactions that do not require real-time engagement or communication between parties once initiated. In contexts such as proofs or transactions, this means that one party can complete actions without needing to wait for responses or confirmations from others.For instance, in non-interactive proofs, a party can generate a proof of their knowledge of a secret without needing to interact with anyone else to validate it. This enhances efficiency since the process can be streamlined and does not rely on constant back-and-forth communication.In payment systems, non-interactive transactions allow users to send funds without needing to communicate transaction details each time. This is particularly useful for automated systems, smart contracts, or on-chain activities, where immediate interactions are neither feasible nor necessary. Overall, non-interactive features contribute to speed and efficiency in various applications, allowing for more seamless operations.