Yes, MTCaptcha supports invisible captcha (NoCaptcha Captcha).
Research has shown that captcha increases friction, adding on average 10 seconds to online transactions and turn aways.
Our captcha service uses Adaptive Complexity backed by an advanced risk algo to lower user frustration for real users and substantially lowers bounce rate.
MTCaptcha also supports completely Invisible Captcha (noCaptcha), resulting in zero friction to 95% of all real users and a first attempt pass rate of over 99.5% for humans. (statistics from blended customer usage).
We currently support 2 types of invisible captcha
See Developers Guide - Invisible Captcha for more details on how to enable and configure this.