Abstract: Techniques for presenting and interacting with composite images on a computing device are described. In an example, the device presents a first article and a first portion of a first composite image showing a second article. The first composite image shows a first outfit combination that is different from the first outfit. The device receives a first user interaction indicating a request to change the second article and presents the first article and a second portion of a second composite image showing a clothing article in a second outfit. The second composite image shows a second outfit combination that is different from the first outfit, the second outfit, and the first outfit combination. The device receives a second user interaction indicating a request to use the third article and presents the second composite image showing the second outfit combination.

Abstract: Disclosed are various embodiments for associating clients with user accounts using a unique device identifier. A plurality of identifiers is provided by a client to a device tracker. The device tracker determines if one of the plurality of identifiers matches an identifiers previously stored in association with a user account. If no association exists, the device tracker determines if the client is currently logged into a user account and associates the client with the user account in response to determining that the client is logged into the user account. If the client is not logged into a user account, then the device tracker stores the unique device identifier for the client and waits for the client to log into a user account in the future.