The Microsoft Azure Cognitive Services Speaker Recognition API identifies individual users, and authenticates by using voice. It can be used to add a layer of security to third party applications with a speech verification tool. For pricing, verification and identification have their own separate plans, and there is a free option available that limits transactions to 10,000 per month. The Speaker Recognition API uses JSON for data exchange, and API Keys for authentication.
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The Microsoft Azure Cognitive Services Swift SDK by Vladimir Danila interacts with the API to access image analysis and character recognition services. Developers can preview the interaction with the APIs that include Computer Vision API, Emotion API, Face API, Video API, Speaker Recognition API, Speech API, Linguistic Analysis API, Web Model Analysis API, and Entity Linking API.