Ind. Code § 30-4-2-1.5
(a) Except as provided in subsection (b), a trust that is not created by a will is validly created if the trust's creation complies with the law of the jurisdiction in which the trust instrument was executed or the law of the jurisdiction in which, at the time of creation:
(b) A valid trust must be:
(2) signed by:
As added by P.L.238-2005, SEC.22.