We’re looking into an
issue whereby some users aren’t seeing the bar code scanning icon to the right of the search bar. So far, it looks like clearing
the application’s settings (towards the bottom of the settings page) may fix it, and entering, re-entering, and/or changing Twitter credentials may break it. I’ll post more info as soon as we determine the exact nature of the issue, and there’s a pretty good chance it will be fixable server side. In the meantime, if you’re not seeing the bar code button, try clearing the settings and seeing if that helps.