(a) Except as provided in §§ 4–103 and 4–104 of this subtitle, every will shall be:
(1) In writing;
(2) Signed by the testator, or by some other person for the testator, in the testator’s presence and by the testator’s express direction; and
(3) Attested and signed by two or more credible witnesses in the presence of the testator.
(b) For purposes of this section, a witness is not in the presence of the testator if the witness is in a different physical location than the testator regardless of whether the testator can observe the witness through electronic audio–video or other technological means.