The biometric passport is the new type of passports, which from October 2006 are required for entry to the US by the VWP (see also later on the section Types of biometric passports). The passports must contain an RFID-chip, which holds digitized information about the passport’s owner. The individual government decides much of the specific digital information, but certain demands are made by the US and the ICAO standard.biometric, rfid, icao, vwp