According to the technology blog AppleInsider, rumors that Apple will integrate the face scan camera in the "iPhone 8" released this fall, which triggered speculation that the face recognition technology will replace the Touch ID fingerprint recognition function. But considering that facial recognition technology is not mature enough, Apple is still investing in Touch ID technology. The new iPhone is unlikely to abandon Touch ID and switch to facial recognition technology, at least not this year. The following is a summary of the article: There are many rumors in the industry that Apple will launch a high-end version of the iPhone this year. It will use a range of new technologies, including OLED screens, wireless charging, front and rear glass design, and Touch ID sensors built into the screen. The iPhone 8 is said to be sold as a 10th anniversary edition at a price higher than the iPhone 7s and iPhone 7s Plus. Just last month, KGI’s well-known analyst Guo Minghao released a report saying that the source from the supply chain said that Apple is considering integrating a “revolutionary†front camera system into the mobile phone to support 3D sensing. By adding an infrared emitter and receiver to the regular FaceTime camera, Apple will be able to achieve accurate depth of field imaging for 3D modeling, ideal for creating game avatars and taking 3D selfies. Although Guo Mingxi did not explicitly indicate that the camera system is used for biometrics - face detection, he said in January that Apple is developing facial recognition and iris recognition technology, which aims to replace Touch ID one day. It is unclear whether these systems will catch up with the iPhone 8 in time, but the emergence of the 3D FaceTime camera marks a big step for Apple to achieve this goal. Since Guo Mingxi’s February report has been reported by the media, analysts and experts have focused on the iPhone's face detection capabilities. A security solution that does not require touch, such as facial recognition, is better than a technique such as a fingerprint sensor that requires contact. Technical barrier However, the deployment of facial recognition technology requires overcoming a number of obstacles, from software design and hardware certification to the creation of verification databases. Even if the 3D camera is released as part of the new iPhone 8 feature, it is unlikely to completely replace the Touch ID. In the current situation, facial recognition is not as safe at all as fingerprint recognition. Ultimately, this is actually the difference between 2D imaging and 3D imaging. Fingerprint scanning belongs to 2D, and facial recognition now belongs to the 3D category. The core technology of modern 3D imaging is depth of field imaging, which uses a professional device to establish a phase pattern for an object or environment. For example, laser detection and ranging systems (LIDAR) sensors use laser pulses, time difference ranging, positioning equipment, and other techniques to create highly accurate 3D scenes. The depth of field image of mobile devices continues to improve, but no company has ever demonstrated a system with the same precision and Touch ID. Apple continues to invest in TouchID In addition to technical challenges, Apple has placed a strong bet on the Touch ID solution. All fingerprint sensors on the iPhone, iPad, and MacBook Pro are based on technology developed by AuthenTec. AuthenTec, a security technology company specializing in fingerprint sensing hardware and supporting software, was acquired by Apple for $356 million in 2012. Recent acquisitions can provide some clues for observing Apple's future technology development. In February, after nearly seven years of acquisition of Swedish facial recognition company Polar Rose, Apple acquired the Israeli facial recognition company RealFace for $2 million. Following the acquisition of the motion capture company Faceshift in 2015, Apple also included face recognition and expression analysis company Emotient last year. These acquisitions of Apple are accompanied by the appointment of computer vision and machine learning experts, strongly suggesting that the company is developing a face-based biometric system. At the same time, Apple is clearly developing the next generation of Touch ID technology, which may be an alternative technology. Apple has acquired a number of patents related to advanced fingerprint reading methods, ranging from small adjustments to existing capacitive technology to ultrasonic sensing. It is rumored that the iPhone 8 will be equipped with a fingerprint sensor on or under the screen. Apple also has a corresponding patent, which may not be a coincidence. No hope of using facial recognition this year Given that Apple is still investing a lot of manpower in developing the next generation of Touch ID technology, and is still applying for patents, Apple does not seem willing to completely abandon this technology. Even so, Apple is investing in resources to develop facial recognition solutions and is investing more capital in the acquisition of small professional companies in the near future. A two-pronged strategy is not common for technology, especially for companies like Apple. In the case of Apple's continued development of TouchID technology and the current lack of an accurate and reliable commercial facial recognition system, the recently launched iPhone is likely to adopt a hybrid biometrics solution. Taking into account Guo Minghao's analysis, the iPhone 8 seems to move the Touch ID sensor to the screen while retaining 3D imaging as an auxiliary recognition feature. The so-called 3D FaceTime camera may not be used for authentication at all, but a gesture input method. In any case, it is extremely unlikely that Apple will give up Touch ID and use untested autonomous facial recognition technology on the flagship. Indirect evidence suggests that Apple is moving toward facial recognition, but the technology is not mature enough to be independent. At least for now.
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Why is it difficult for iPhone to give up fingerprints to face recognition?