do you need adobe flash to use captcha

I never really come across captcha but recently it has come up but it never shows up in my browser and I was wondering if the reason is because I do not have adobe flash installed on my computer (for security reasons, it is really terrible)? Or could it be another problem, possibly with some addons I have (Firefox) such as noscript or flash blocker??If it is due to me not having adobe flash install I would suggest that the people behind captcha start to migrate to HTML5, or be left behind in the wastes of the internet.Good day -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/1gYXIc9.