Oppoa3 is not equipped with fingerprint recognition, but it does support face recognition. According to Oppo, the face unlock speed of Oppoa3 is only 0.18s, and it can quickly unlock even in dark environments. However, the face recognition of Oppoa3 cannot be used for payment, which means that users can only input passwords when making payments. Moreover, the face recognition of Oppoa3 is not 3D structured, so its security is relatively low compared to fingerprint recognition. Additionally, only one face can be added to Oppoa3 for security reasons. However, face recognition also has many advantages. It has emerged as a strong alternative to traditional fingerprint recognition, as it does not have any issues with wet hands or wearing gloves. Oppoa3 can recognize 1024 feature points, and users can add their face in the settings. By combining it with the lift-to-wake feature, the unlocking speed is even faster. Furthermore, this cool “black technology” of face recognition will continue to mature and become a standard feature on domestic smartphones, eventually replacing fingerprint recognition.