A handwritten last will is called a "holographic last will." It is valid in about 25 states if all of its material provisions and clauses are handwritten. However, because most handwritten last wills are not as in-depth as the LegalZoom Last Will and Testament and because they are often not properly written, they are not generally recommended. Courts can be unusually strict in determining whether a holographic last will is authentic. More importantly, it is not recommended that people revise their last wills by hand.