Is a will written on a computer and bearing the testator's fingerprint and signature, along with the witnesses' signatures, considered legitimate? And does the phrase "فمن غيرها بعدما سمعه" (meaning "And whoever alters it after hearing it") carry the meaning of "execute it"?

A bequest of one-third of one's wealth to a non-heir is valid and enforceable, whether it is verbal or written. A written bequest is proven if it is established to be in the testator's handwriting, and its content is accepted if the handwriting is definitively proven to be that of the testator, either by the heirs' acknowledgment or by evidence. Likewise, a bequest written by printer is proven if the testator had witnesses to it or if the heirs acknowledge it. However, a mere printout without witnesses or acknowledgment does not validate the bequest.