Hello, we are a group of student researchers at Georgia Tech who are measuring the usability and security of current and potential audio CAPTCHA designs. Since you are visually-impaired, you would be the perfect participant to evaluate the effectiveness of various designs that can improve the quality of your daily experiences with audio CAPTCHAs. There are three different surveys that we will ask you to complete over time and you will be compensated $10 per survey. The surveys themselves will take place over Skype or Zoom and will last about thirty minutes each. The data you provide us will not be published nor used for any other purposes besides evaluation of audio CAPTCHA designs. If you are interested in participating, please complete the form at https://goo.gl/forms/04jfFWTAxP7hpol62. For any further questions, you can email one of our team members at svkarimi15@.... Thank you in advance.