A touchscreen, now incorporated in most smartphones, tablets, laptops, and similar devices, presents an effective and transparent method to incorporate continuous active user verification schemes. The touchscreen element grid structure can be used to capture information, such as a set of one-dimensional time-varying signals produced as the user's finger moves past the grid intersections points. This information may be used to verify the user, or that a valid user currently has possession of the mobile device, even while the user is not consciously engaged in an active verification process. Further functions, such as habitual gesture recognition, can also be performed using the same grid outputs.

A mobile device includes a photographing unit to photograph an object to generate an object image, a display unit having a panel to display a screen, a sensor configured to sense a motion of the mobile device, and a control unit configured to unlock the mobile device to access the normal mode according to either one of a first unlocking process using a password and a second unlocking process using the sensed motion and the object image in response to the sensed motion.

A mobile device includes a photographing unit to photograph an object to generate an object image, a display unit having a panel to display a screen, a sensor configured to sense a motion of the mobile device, and a control unit configured to unlock the mobile device to access the normal mode according to either one of a first unlocking process using a password and a second unlocking process using the sensed motion and the object image in response to the sensed motion.

While displaying an application user interface for an application (e.g., a media application), a computer system receives a request to display a system user interface in place of the application user interface. In response, the computer system performs one of a plurality of operations in accordance with a state of the application, including: in accordance with a determination that the application is in a first state, display information about the application in the system user interface; and in accordance with a determination that the application is in a second state distinct from the first state, displaying the system user interface without the information about the application in the system user interface.

While displaying an application user interface for an application (e.g., a media application), a computer system receives a request to display a system user interface in place of the application user interface. In response, the computer system performs one of a plurality of operations in accordance with a state of the application, including: in accordance with a determination that the application is in a first state, display information about the application in the system user interface; and in accordance with a determination that the application is in a second state distinct from the first state, displaying the system user interface without the information about the application in the system user interface.

In various embodiments, different mobile phone apparatuses are provided, comprising: a touchscreen a near field communication interface; at least one non-transitory memory storing instructions; and one or more processors in communication with the touchscreen, the near field communication interface, and the at least one non-transitory memory, wherein the one or more processors execute the instructions to initiate various capabilities and/or functionalities in connection with a screen displayed on the touchscreen.

Improved techniques for facilitating emergency access to one or more contacts stored on a portable electronic device are disclosed. One or more contacts on the portable electronic device are designated as emergency contacts. While the portable electronic device is password-locked, a request to display the one or more emergency contacts on the password-locked portable electronic device is received. Without requiring a password, the one or more emergency contacts are displayed on the portable electronic device.

A method and an apparatus for transmitting a message in an electronic device are provided. The method for transmitting a hidden message includes displaying one or more hiding frames in an input message display area of a display, and transmitting a message including information on the hiding frame.

A method and an apparatus for transmitting a message in an electronic device are provided. The method for transmitting a hidden message includes displaying one or more hiding frames in an input message display area of a display, and transmitting a message including information on the hiding frame.

A non-transitory computer readable medium contains computer readable codes as a program to execute a method of a mobile device configured to generate an object image from an object disposed to face the mobile device, the method including sensing a motion of the mobile device by using a sensor in a motion detection process, activating a user identification process of photographing the object to generate the object image and determining that the object image represents an authorized user, in response to the sensed motion of the mobile device, and unlocking the mobile device to access a normal mode of the mobile device according to a password input in a security check process of a security mode or according to the determination of the user identification process.