Copied Image Of Coffee Filter

Warning This Section Does Contain Spoilers

This coffee filter has an encoded message on it that JWJ has sent us. He advises us to use a tool that he sent in a previous box, one that is above all and most important, but is least conspicuous, the blacklight. On the back if the paper are the following words:

Bifid Typical Polybius

To see how to solve this cypher please visit here.