Criminal trespass occurs when a person enters or remains on someone else's property without permission. This can include private homes, businesses, or land. The property owner must have clearly indicated that entry is not allowed, often through signs or verbal warnings. In many jurisdictions, criminal trespass is considered a misdemeanor, which can lead to fines or even jail time. The law aims to protect property rights and ensure that individuals respect the boundaries set by others. Understanding these laws helps maintain safety and order in communities.