Certification when deponent is unacquainted with language ensures affidavit contents are read or translated and signed. Where a deponent is unacquainted with the affidavit language, blind, or illiterate, the affidavit must be truly and audibly read or translated into a language known to the deponent, who must indicate understanding and affix their LTI/signature/mark; the certifier must record their signature, name, designation and date.