How did Odysseus convince his farther who he was?

Odysseus convinced his father, Laertes, of his identity by revealing specific details that only he would know, such as the scar on his leg and the trees he had planted in their orchard. He also recounted shared memories and experiences from their past, which helped reaffirm his identity. This emotional reunion underscored the deep bond between father and son, ultimately convincing Laertes that Odysseus had returned home.