The Study On Data Protection Skill Of Android Wear Smart Watch

With the development of mobile technology and the promotion of intelligent operating system, wearable device has evolved from conceptualization to commercialization, Google, Apple, Samsung, LG and many other technology companies have also begun to explore this new field. In 2014, Google launched the new intelligent platform Android Wear, which was specifically designed for the smart watches and other wearable devices. Via Bluetooth, a smart watch equipped with Android Wear system can communicate with mobile phone, receive message notification from mobile phone applications, and allow the user to make a simple handle, which is more convenient than a cell phone. It also integrates Google Now technology and can provide more personalized service to users. With built-in sensors, smart watches can also monitor the status of human signs and movement, which get people to have a better known to their own physical health.However, when the Smart Watch provides users with convenience, there are some data security risks. When implanted the malicious recording software, because of its portability, Smart Watch will become a preferable eavesdropping tool to cell phone for criminals; malware is also possible to send data out via Bluetooth; when the watch is lost or stolen, others can also use ADB(Android Debug Bridge) tool to copy data from watch to the computer. These data security problems will pose a serious threat to users’ privacy and property.For Android Wear Smart Watch, this paper presents a data protection skill, which is implemented by controlling the switch of data ports such as the microphone, Bluetooth and ADB in linux kernel level. This skill uses two different ways to achieve control of the three data ports. The control of microphone is implemented by adding control logic in a key position of the sound card driver; the control of Bluetooth and ADB is implemented by intercepting the specific library file or executable program in file system driver. At the same time, This paper implents a method of user interaction with kernel application, which is achieved by interceptting read and write operations of specific files in the file system driver, and can display and control the current switch status of data ports, without the need to increase or modify the application layer program. Using LG G Watch as study, this paper completed a series of work, from envrionment build, source code download, kernel compilation, unpack and replace of Bootimg, to kernal flash and function test, finnaly we verify the feasibility of the skill.