Mo. Rev. Stat. § 486.1150: Principal requirements for remote online notarization.

A remote online notary shall perform a remote online notarization only if the principal:

(1) Is in the presence of the notary utilizing live audio-video conferencing technology at the time of notarization;

(2) Is personally known to the notary or identified by the notary through satisfactory evidence as set forth in section 486.1145;

(3) Appears to understand the nature of the transaction;

(4) Appears to be acting of his or her own free will;

(5) Communicates directly with the notary in a language both understand; and

(6) Reasonably establishes the electronic signature as his or her own.