Please cut and paste the below note, it is legal and binding which you can put on your front door or sign post.
Michael please research this yourself, look at the case this is related to as the police still have the right to walk on your property under common law, until you tell them their common law invitation under common law has be revoked by you and then, they must leave your property if they don’t then they are trespassing, and charges can be laid against them.
WARNING TRESPASS IS AN OFFENCE!
ADMITTANCE TO THE PROPERTY IS ONLY
BY INVITATION OR PRIOR APPOINTMENT
Pre-approved visitors are permitted admittance to this property if the nature of the visit is related to inquiry as requested or pre-approved family members.
Appointments may be requested by correspondence or by telephone. AUTHORITY High Court of Australia Plenty v. Dillon (1991) 171 CLR 635F.C. 91/004
Offenders will be find or prosecuted and penalised up to One Million Dollars Australian (per offence per UCC3-419) including, but not limited to, garnishing of personal assets in lieu of injury caused by violation of this Private Property Notice.
By Holder of the Holder in Due Course