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After her grandfather was deceived by a deepfake of his brother's voice in a scam, Tarini Padmanabhuni founded DetectifAI, a San Francisco-based startup building AI models small enough to run directly on smartphones to detect fake voices in real time. The company is competing in Startup Battlefield at TechCrunch Disrupt 2026, representing a growing sector of deepfake detection technology aimed at protecting consumers from voice-based fraud and impersonation schemes.