Persons who cannot act as Witness to a Will
New South Wales: A person who is unable to see and attest that a testator has signed a document may not act as a witness to a will. http://www.austlii.edu.au/au/legis/nsw/consol_act/sa2006138/s9.html
Northern Territory:
A person who is not able to see and attest that a testator has signed a document may not be a witness to a will.
http://www.austlii.edu.au/au/legis/nt/consol_act/wa91/s11.html
Tasmania:
A person who is not able to see and attest that a testator has signed a document may not be a witness to a will.
http://www.austlii.edu.au/au/legis/tas/consol_act/wa200891/s11.html
Victoria:
A person who is unable to see and attest that a testator has signed a
document, may not act as a witness to a will.
http://www.austlii.edu.au/au/legis/vic/consol_act/wa199791/s10.html
Western Australia:
A person who is unable to see and attest that a testator has signed a document cannot act as a witness to a will.
http://www.austlii.edu.au/au/legis/wa/consol_act/wa197091/s11.html
Draft Wills Bill 1997:
A person who is unable to see and attest that a testator has signed a document may not act as a witness to a will.
http://www.lawlink.nsw.gov.au/lrc.nsf/pages/R85APPENDIXA