In 2017 , a team up of investigator from the University of Maryland feel that on-line spoken communication - to - textual matter service could be used with a senior high level of preciseness to defeat reCAPTCHA v2 sound challenge automatically . The dishonour was bid UnCaptcha by researcher . Google introduce various improvement to the reCAPTCHA dodging after the cognitive process was discover and unCaptcha no tenacious work . In January 2019 , however , researcher declared that they had supervise to repair the blast , send for it unCaptcha2 , and release the cogent evidence - of - construct ( PoC ) code with the permit of Google . The researcher famed at the clock time that they would not be kick upstairs their inscribe and that at some degree it would actually full stop break away . As planned , the PoC did halt tend , but Germany - establish investigator Nikolai Tschacher has negociate to fine-tune the PoC for unCaptcha2 to make up it occasion against the newfangled adaptation of reCAPTCHA v2 . Tschacher relinquish a television certify how a bot can role Google ’s own oral communication - to - text API with an truth of 97 pct to puzzle out the audio reCAPTCHA .
In 2018 , Google let go reCAPTCHA v3 , which fortify user feel by extend adaptative put on the line depth psychology in the backdrop kind of than register difficulty , but Tschacher power point out that “ reCAPTCHA v2 is all the same ill-used as a come down - cover chemical mechanism in the newfangled reCAPTCHA v3 . ” The writer , along with a verbal description of the improvement he take in in unCaptcha3 relation to unCaptcha2 , let go of the PoC cipher . It is Charles Frederick Worth remark that some have produce gratuitous vane web browser elongation that enable substance abuser role the unCaptcha approaching to pickle reCAPTCHA problem instantly with the clack of a clitoris .
