User Identity Hiding Method of Android

With an 86.1% global market share, Android takes the top spot smartphone operating system. Due to its open environment, Android suffers from various kinds of attacks, which cause a serious privacy leakage problem. To protect users' privacy information, this article proposes a user identity hiding method of Android. The method constructs a hidden user identity in Android based on the multi-user mechanism. In particular, by hiding information related to hidden user, the method makes it invisible to normal user. The method can quickly switch the identity of normal user and hidden user by passwords. Thus, the method can deal with privacy information under hidden user identity while processing regular information under normal user identity. Compared with traditional security methods of Android, this method significantly improves the security of android devices without arousing any suspicion. Experimental results show the effectiveness of the method that it not only achieves ideal hiding effect on user identity, but also implements quick switch without sacrificing the performance of system.