Identity authentication, unlocking and payment methods and apparatuses, storage medium, product and device

Embodiments of the invention provide identity authentication, unlocking and payment methods and apparatuses, a storage medium, a product and a device, and relate to the field of data processing. The identity authentication method comprises the steps of determining first feature data of a first user image; performing quantization processing on the first feature data to obtain second feature data; and based on the second feature data, obtaining an identity authentication result. Through the identity authentication method and apparatus, the feature data does not need to be encrypted and decryptedin the identity authentication process, so that while the user information security is ensured, the computing resources of the device are saved and the identity authentication efficiency is improved;and therefore, the user experience is optimized. 本发明实施例提供种身份认证、解锁及支付方法、装置、存储介质、产品和设备，涉及数据处理领域。其中，身份认证方法包括：确定第用户图像的第特征数据；对所述第特征数据进行量化处理，获得第二特征数据；基于所述第二特征数据，得到身份认证结果。通过本发明实施例，在身份认证的过程中无需对特征数据进行加密和解密操作，在保证用户信息安全性的同时，节省了设备计算资源并提升