A comparison to TSA is flawed. Captcha is not a pass fail system, it is a score that is passed on to the web host and they decide what to do with it. Really any

A comparison to TSA is flawed. Captcha is not a pass fail system, it is a score that is passed on to the web host and they decide what to do with it. Really any similar product to block malicious users would have the same problems, and the solution is to educate the website operators so they can avoid blocking legitimate users.