In Personam refers to a legal term that means "against the person." It describes a type of jurisdiction where a court has authority over an individual, typically based on their residence or actions within a specific area. This allows the court to issue judgments that directly affect the rights and obligations of that person. In contrast to In Rem, which pertains to property, In Personam focuses on personal liability. For example, if someone breaches a contract, a court can hold them accountable through an In Personam action, requiring them to fulfill their obligations or pay damages.