Google found me loads of solutions:
face and voice authentication for my website - Google Search[
^] - using copy'n'paste from your question as the search term.
But, if you mean "
free face and voice authentication for my website" then you are probably going to be disappointed. It's complicated stuff that many companies have invested heavily in, and they want to recoup that investment.
I suspect that you will have to bite the bullet and pay for this, or find another solution to your security problems.