Secure Communities identifies undocumented immigrants with the use of modern technology, notably biometric identification techniques. These passports are called biometric passports. The mapping of vascular bifurcations is one of the basic steps in biometric identification. Identification of persons using biometric methods is outside the scope of this standard. In addition to biometric authentication, Windows Hello supports authentication with a PIN. The passports contain several other technological characteristics other than biometric technology. Visa waiver applies only to holders of biometric passports. It contains an RFID chip similar to that in biometric passports. More sophisticated factors include such things as hardware tokens and biometric security. Another example of evasion is given by spoofing attacks against biometric verification systems. They are used to complement the identity information provided by the primary biometric identifiers. The results of using biometric verification has been successful. A more recent standard covers biometric passports. A more recent standard is for biometric passports. Many countries are moving towards the issue of biometric passports.