The handwritten will In this case, your last will and testament MUST be handwritten; a computer printout is not valid. A handwritten will can also be written jointly by spouses and can be amended or changed at any time. The notarial will You write your will together with a notary of your choice, who then notarizes it. If you wish, the notary can place your will in official safekeeping at the local court. This way you can be sure that your last will and testament is formulated in a legally sound manner and will not be lost.