Live Caller ID

Asked on 2024-07-28

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Apple introduced Live Caller ID in the session What’s new in privacy. This feature allows developers to provide a great experience with live caller ID without a server learning who's calling. It uses homomorphic encryption, enabling a server to compute on encrypted values without decrypting them, thus maintaining user privacy. The server processes the incoming ciphertext, evaluates for a match, and then returns the transformed ciphertext back to the requesting device, where the results are displayed. This implementation leverages private relay and private information retrieval to ensure privacy.