A cross tattoo on the finger typically symbolizes faith or belief in Christianity. It is a reminder to the wearer of their faith and is usually a sign of devotion and commitment to God. The finger is often chosen as the location for this tattoo because the hand is seen as a representation of action and doing the will of God. It can also be symbolic of struggles and trials endured by the wearer, with the cross representing a triumphant victory over any difficulties or obstacles. Additionally, the finger is generally thought to be a powerful and expressive part of the body, and thus is seen as an ideal location for a symbol of faith.