tag / biometric passport
Conspiracy theories are often difficult to debunk, as they usually rely on no evidence. However, passports are issued by a country to its citizens to enable their international travel. Most e-passports contain the facial image as the only biometric - no change from the traditional passport. E-passports that contain fingerprints or iris patterns have increased encryption that severely restricts who can read them. Countries have always collected the primary biometric, the photo of the face and more often than not have a database of these photos to detect people who apply for passports in other names. These days, most countries have privacy laws which restrict the dissemination of the biometrics to other organizations; certainly international interchange does not happen. Other countries do collect biometrics, facial images or fingerprints, to satisfy their security requirements when you enter but these are voluntary - if you don't want to have your biometric collected by another country, simply do not go to that country.
Courtesy the Keesing Journal, 2009