Well it appears that one of the features of Chinese Buddhist monks is that they practice the burning marks on their scalp, finger or part of the skin on their anterior side of the forearm with incense as a sign of ordination. This is the first time that I have ever heard of this practice taking place in Buddhism.
MARKS ON THE HEAD
1. The Triple Gem: the Buddha, the Dharma and the Sangha;
2. The three vows of ridding oneself of bad habits and thoughts, cultivating good, and having wisdom to help releasing others from suffering;
3. The Three Trainings: Morality/Discipline, concentration and wisdom 
Then the LORD said, “Put your hand inside your cloak.” So Moses put his hand into his cloak, and when he took it out, the skin was leprous —it had become as white as snow.Exo 4:6