Patent Info: WO2020060606 - CRYPTOCURRENCY SYSTEM USING BODY ACTIVITY DATA - Microsoft.
Digits check out.
https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2020060606&tab=PCTBIBLIO
Designed to detect brain waves, blood flow, it has a thermal sensor, optical sensor, I believe this would be in his vaccination through Nano tech RFID chip and tracked by the 5G system.