Tennessee Code 39-14-405 Criminal Trespass
Here is a major portion of what is in the Tennessee Criminal Trespass Code that should interest some, especially section (c):
39-14-405. Criminal Trespass
(a) A person commits criminal trespass if the person enters or remains on property, or any portion of property, without the consent of the owner. Consent may be inferred in the case of property that is used for commercial activity available to the general public or in the case of other property when the owner has communicated the owner's intent that the property be open to the general public.
(b) It is a defense to prosecution under this section that:
(1) A person entered or remained on property that the person reasonably believed to be property for which the owner's consent to enter had been granted;
(2) The person's conduct did not substantially interfere with the owner's use of the property; and
(3) The person immediately left the property upon request.
(c) The defenses to prosecution set out in subsection (b) shall not be applicable to a person violating this section if the property owner:
(1) Posts the property with signs that are visible at all major points of ingress to the property being posted and the signs are reasonably likely to come to the attention of a person entering the property; or
(2) Places identifying purple paint marks on trees or posts on the property; provided, that at least one (1) sign is posted at a major point of ingress to the property in a manner that is reasonably likely to come to the attention of a person entering the property and that the sign includes language describing that the use of purple paint signifies "no trespassing." If purple paint is used, then purple paint must be vertical lines of not less than eight inches (8″) in length and not less than one inch (1″) in width; placed so that the bottom of the mark is not less than three feet (3′) or more than five feet (5′) from the ground; and placed at locations that are reasonably likely to come to the attention of a person entering the property.
(d) For purposes of this section, "enter" means intrusion of the entire body or when a person causes an unmanned aircraft to enter that portion of the airspace above the owner's land not regulated as navigable airspace by the federal aviation administration.