At the end of a Qualtrics survey there should be a Twitter login button that prompts users to authorize an application. After login, users will be shown how their display name will be modified as in: current display name + #Hashtag (append a hashtag to their existing display name). After all of this, users will return to the survey.
The deliverable will be a document with instructions/code of how to implement this in Qualtrics. Ideally (but I'm not sure if this is possible), this should be done within the Web Service of Qualtrics (without the need to create a website for the application). The API calls should be done from Qualtrics. Please also include the POST/GET commands needed for the OAuth in Twitter and to retrieve the display name and modify it (POST account/update_profile etc.). Ideally I should be able to read the document/instructions and implement this in the survey.