Abstract: In an embodiment, a device may include an attention detection service. The attention detection service may monitor various peripheral devices in the device for indications that a user is paying attention to the device. Various clients may register for notification of attention detection and attention lost (attention no longer detected) events, or may poll the service for the events. If a user is not paying attention to the device, it may be possible to take various actions to permit reduced energy consumption.

Abstract: In an embodiment, a device may include an attention detection service. The attention detection service may monitor various peripheral devices in the device for indications that a user is paying attention to the device. Various clients may register for notification of attention detection and attention lost (attention no longer detected) events, or may poll the service for the events. If a user is not paying attention to the device, it may be possible to take various actions to permit reduced energy consumption.

Abstract: In an embodiment, a device may include an attention detection service. The attention detection service may monitor various peripheral devices in the device for indications that a user is paying attention to the device. Various clients may register for notification of attention detection and attention lost (attention no longer detected) events, or may poll the service for the events. If a user is not paying attention to the device, it may be possible to take various actions to permit reduced energy consumption.

Abstract: Systems and methods are disclosed for implementing an educational mode on a portable computing device, such as a tablet computer, that is a single-user system, used serially by multiple users. Each user can have a separate user storage that may be encrypted. The computing device boots as a system user to a login screen. A first student user enters user credentials into the login screen. The computing device can reboot the user-space processes, while leaving the kernel running, rebooting the computing device as the first student user. When the first student user logs out, data to be synchronized to, e.g., the cloud, can be synchronized for the first student user while a second student user is logged into the device.

Abstract: In an embodiment, a device may include an attention detection service. The attention detection service may monitor various peripheral devices in the device for indications that a user is paying attention to the device. Various clients may register for notification of attention detection and attention lost (attention no longer detected) events, or may poll the service for the events. If a user is not paying attention to the device, it may be possible to take various actions to permit reduced energy consumption.

Abstract: In an embodiment, a device may include an attention detection service. The attention detection service may monitor various peripheral devices in the device for indications that a user is paying attention to the device. Various clients may register for notification of attention detection and attention lost (attention no longer detected) events, or may poll the service for the events. If a user is not paying attention to the device, it may be possible to take various actions to permit reduced energy consumption.

Abstract: An electronic device, while displaying a user interface that includes a first region corresponding to a first software application and a second region corresponding to a second software application, receives a first touch input, on a touch-sensitive display, that originates from the first region and extends to the second region. The device sends a touch began event to the first software application in response to detecting the first touch input at a first location corresponding to the first region, sends a touch cancel event to the first software application in response to detecting that the first touch input has left the first region of the user interface, and sends to the second software application information corresponding indicating that the first touch input has entered the second region of the user interface in response to detecting that the first touch input has entered the second region of the user interface.

Abstract: Systems and methods are disclosed for implementing an educational mode on a portable computing device, such as a tablet computer, that is a single-user system, used serially by multiple users. Each user can have a separate user storage that may be encrypted. The computing device boots as a system user to a login screen. A first student user enters user credentials into the login screen. The computing device can reboot the user-space processes, while leaving the kernel running, rebooting the computing device as the first student user. When the first student user logs out, data to be synchronized to, e.g., the cloud, can be synchronized for the first student user while a second student user is logged into the device.

Abstract: Systems and methods are disclosed for implementing an educational mode on a portable computing device, such as a tablet computer, that is a single-user system, used serially by multiple users. Each user can have a separate user storage that may be encrypted. The computing device boots as a system user to a login screen. A first student user enters user credentials into the login screen. The computing device can reboot the user-space processes, while leaving the kernel running, rebooting the computing device as the first student user. When the first student user logs out, data to be synchronized to, e.g., the cloud, can be synchronized for the first student user while a second student user is logged into the device.

Abstract: In an embodiment, a device may include an attention detection service. The attention detection service may monitor various peripheral devices in the device for indications that a user is paying attention to the device. Various clients may register for notification of attention detection and attention lost (attention no longer detected) events, or may poll the service for the events. If a user is not paying attention to the device, it may be possible to take various actions to permit reduced energy consumption.

Abstract: An electronic device, while displaying a user interface that includes a first region corresponding to a first software application and a second region corresponding to a second software application, receives a first touch input, on a touch-sensitive display, that originates from the first region and extends to the second region. The device sends a touch began event to the first software application in response to detecting the first touch input at a first location corresponding to the first region, sends a touch cancel event to the first software application in response to detecting that the first touch input has left the first region of the user interface, and sends to the second software application information corresponding indicating that the first touch input has entered the second region of the user interface in response to detecting that the first touch input has entered the second region of the user interface.

Abstract: Systems and methods are disclosed for tracking the lifecycle of an object across processes and for tracking the lifecycle of processes that are processing the object. A first process, P1 can generate an Action object representing work to be performed by another process, PN. The Action object can carry a payload of arbitrary information, an action handler, a handle to a response queue, and a timeout value. A token set can be requested from a kernel of an operating system. A first token in the set can be held by one process at a time. The kernel enforces that rule. The kernel can track the location of the first token. A copy of the Action object is viable for sending a response if it holds the first token. An Action Listener within P1 holds the second token of the set and uses it to validate a response received by P1 from a remote process.

Abstract: An electronic device, while displaying a user interface that includes a first region corresponding to a first software application and a second region corresponding to a second software application, receives a first touch input, on a touch-sensitive display, that originates from a first location corresponding to the first region and extends to a second location corresponding to the second region. The first region includes a non-boundary region and a boundary region. In response to receiving the first touch input, when the first location corresponds to a non-boundary region of the first region, the device processes the first touch input with the first software application. When the first location corresponds to a boundary region of the first region, the device conditionally processes the first touch input with the second software application.

Abstract: Systems and methods are disclosed for implementing an educational mode on a portable computing device, such as a tablet computer, that is a single-user system, used serially by multiple users. Each user can have a separate user storage that may be encrypted. The computing device boots as a system user to a login screen. A first student user enters user credentials into the login screen. The computing device can reboot the user-space processes, while leaving the kernel running, rebooting the computing device as the first student user. When the first student user logs out, data to be synchronized to, e.g., the cloud, can be synchronized for the first student user while a second student user is logged into the device.

Abstract: An electronic device, while displaying a user interface that includes a first region corresponding to a first software application and a second region corresponding to a second software application, receives a first touch input, on a touch-sensitive display, that originates from a first location corresponding to the first region and extends to a second location corresponding to the second region. The first region includes a non-boundary region and a boundary region. In response to receiving the first touch input, when the first location corresponds to a non-boundary region of the first region, the device processes the first touch input with the first software application. When the first location corresponds to a boundary region of the first region, the device conditionally processes the first touch input with the second software application.

Abstract: Systems and methods are disclosed for tracking the lifecycle of an object across processes and for tracking the lifecycle of processes that are processing the object. A first process, P1 can generate an Action object representing work to be performed by another process, PN. The Action object can carry a payload of arbitrary information, an action handler, a handle to a response queue, and a timeout value. A token set can be requested from a kernel of an operating system. A first token in the set can be held by one process at a time. The kernel enforces that rule. The kernel can track the location of the first token. A copy of the Action object is viable for sending a response if it holds the first token. An Action Listener within P1 holds the second token of the set and uses it to validate a response received by P1 from a remote process.