A more thorough explanation:

A prescriptive easement is a legal right to use someone else's property for a specific purpose, acquired through open and notorious use of the property without the owner's permission, for a continuous and uninterrupted period of time. The length of time required to establish a prescriptive easement varies by state law.

For example, in Oregon, a person may claim a prescriptive easement if they have openly and continuously used a roadway on someone else's property for at least 10 years without the owner's permission. In the case of Beebe v. DeMarco, the court found that the plaintiff had established a prescriptive easement because they had used the roadway to access the rear of their property for over 30 years, and their use was consistent with their needs and had not been interfered with by the owner.

It's important to note that a prescriptive easement can only be acquired through open and notorious use that is adverse to the owner's rights. This means that the use must be obvious and visible to the owner, and the user must act as if they have the right to use the property, even if they do not have the owner's permission. Additionally, a negative easement, which prohibits the owner from doing something on their own property, cannot be acquired through prescription.