O2 has developed an AI-powered 'granny' named Daisy to waste scammers' time by engaging them in conversations, keeping them away from real customers. Daisy is trained using cutting-edge technology and real scambaiter content, making her indistinguishable from a real person. The AI is part of O2's 'Swerve the Scammers' campaign, which aims to prevent fraud and protect customers. By reporting suspected scam calls and texts to 7726, customers can help O2 block scammers' numbers and prevent similar scams.