− | The PIC is the capitalized hexadecimal four character representation of the first two bytes of the SHA256 hash of the concatenation of the UTF-8 representation of the Experiment Secret and the Participant Identifier. | + | The PIC is the capitalized hexadecimal four character representation of the first two bytes of the SHA256 hash of the concatenation of the UTF-8 representation of the Experiment Secret and the Participant Number. |