Abstract: Tracking modes of a user device is described. In one method, the user device tracks the user device in a stolen mode and an elevated mode. The user device generates a challenge to authenticate a user as an owner of the user device when the user device is in the elevated mode. The challenge includes a question about a list of history items comprising at least one counterfeit history item and at least one valid history item. The user device generates an audible alert when the user device is in the stolen mode.

Abstract: A request for a webpage or a service of a website server is sent from a user computing device to a proxy website server. The proxy website server can receive information from a website server indicative of a usage level of the website server. The proxy website server can determine whether to send the request to the website server based on usage of the website server compared to a capacity threshold. The proxy website server can send a response to the user computing device which includes either the requested webpage or service from the website server or an error message.

Abstract: Disclosed are various embodiments for provisioning client credentials via a trusted channel. A client computing device is configured to access a trusted channel of communication. An account configuration manager automatically requests access to accounts linked to the trusted channel of communication. A respective security credential communication is received for the accounts via the trusted channel of communication. One or more applications are configured to access the accounts based at least in part on the respective security credential communications.

Abstract: Disclosed are various embodiments for facilitating temporary virtual identities in a social networking system. An identity associated with a user is authenticated. A time period, location or other parameter associated with the user is authenticated. The temporary virtual identity is registered in the social networking system. Content generated by the user is published in the social networking system under the temporary virtual identity.

Abstract: Systems and methods enable users to exchange content, such as chat text, with other users that are consuming like video media. In one implementation, several users collectively group together to form a video session. The video media played during the video session may be selected by a vote of the users. The users in the video session each consume the same video media, and the video media is played on individual user computer devices in a synchronized manner. The users send chat text to one another over a network using a computer user interface. The chat text is superimposed over the synchronized video running on the individual user computer devices.

Abstract: Disclosed are various embodiments for dominant hand detection in a computing device such as a mobile computing device. A dominant hand preference of a user of the computing device is automatically detected. A user interface rendered by the computing device is automatically adapted based at least in part on the dominant hand preference.

Abstract: A strategy is described for delivering requested books to users along with customized bookmarks or other functional objects. An exemplary bookmark can include various informational items, including an informational item that describes the delivered book, an informational item that rates the desired book, an informational item that recommends one or more other books based on various factors, and an informational item that provides a call-to-action. The call-to-action encourages the user to access an electronic service to review the delivered book, purchase one or more additional books, or take some other action. The electronic service can provide accounting which identifies and registers user actions that are motivationally linked to the information imparted by the bookmarks.

Abstract: A user device determines that the user device has been stolen and generates an audible alert when the user device has been stolen.

Abstract: Disclosed are various embodiments for facilitating temporary virtual identities in a social networking system. An identity associated with a user is authenticated. A time period, location or other parameter associated with the user is authenticated. The temporary virtual identity is registered in the social networking system. Content generated by the user is published in the social networking system under the temporary virtual identity.

Abstract: Disclosed are various embodiments for generating user communities based on common interests. Users demonstrating a potential interest in a product and/or product class in an electronic commerce system are identified. A geographic location of each of the users can also be identified. The geographic area can be expanded or reduced so that the pool of users in a community meets minimum and/or maximum thresholds. An event can be created on behalf of the users in an establishment. An electronic forum can also be created. The users in a community can also be linked together in a social networking system.

Abstract: Disclosed are various embodiments for placing user interface elements in a network page. A first network page is generated with client side code embedded therein that can track navigation input data associated with the user. The navigation input data can be interpreted to determine whether the user has a tendency to idle an input device in a particular area of the network page or exhibit any other behavior that allows a high value area to be identified.