In the form of a hologram or holograph. / (uncommon) Handwritten by a single writer.

(law) A will that is handwritten by the testator, without the usual formalities of execution.

In a holographic way.

holographic

(law, textual criticism) A handwritten document that is solely the work of the person whose signature it bears, especially a letter, deed, or will; an original manuscript, a protograph. / A hologram.

To record by means of holography.

plural of holograph

One who creates holograms.

present participle of holograph

simple past tense and past participle of holograph