Given the following passage  "To symbolize their bond with the papacy, the pope gives each newly appointed cardinal a gold ring, which is traditionally kissed by Catholics when greeting a cardinal (as with a bishop's episcopal ring). The pope chooses the image on the outside: under Pope Benedict XVI it was a modern depiction of the crucifixion of Jesus, with Mary and John to each side. The ring includes the pope's coat of arms on the inside.[citation needed]",  answer the following question. Note that the answer is present within the text.  Question: How does ring facotr in when welcoming a cardinal?
Answer:
traditionally kissed by Catholics