Provides that will is not valid unless signed by testator or substantially written in testator's handwriting.

This bill changes New Jersey's will validity rules by requiring that a will must either be signed by the person making it (the testator) or be substantially written in their handwriting to be legally valid. It directly affects individuals creating wills and executors who must prove a document's validity after someone dies. The key change removes an exception allowing unsigned, typed documents to be accepted as valid wills (as ruled in a 2012 court case), now mandating that such documents must meet the signature or handwriting requirement. The law applies to all wills filed with the Surrogate's Court on or after its effective date.