This link from my friend Adam...

A new project called Optag, run by Dr Paul Brennan, an electrical engineer at University College London, is aiming to revolutionize security at airports. Optag consists of an RFID wristband worn by airline passengers awaiting flights, which will broadcast the location of the wearer to security officials anywhere within the airport. Trials are currently underway in Hungary, but it is hoped if these are a success, the project would be adopted by other airports across Europe within the next two years.

Quote: "Brennan said Optag has been designed to improve airport security, with the ability to track the movement of suspicious passengers and bar them from entering restricted areas. The ability to locate individuals could also aid airports in an evacuation situation, he said, and in finding lost children and passengers who are late to the departure gate. Optag is unique from its RFID predecessors - standard RFID devices only have a range of a few centimetres but Optag has a range of 10 to 20 metres and can be located within a radius of one metre, Brennan said. 

A few months ago I commented on another scheme called Teragate, which is also aiming to revolutionize security at airports and other high security installations. While there are claims RFID is secure due to the fact that the devices are passive (only broadcasting information when scanned), it has been shown that given a large enough scanner it is possible to scan RFID chips up to 70 feet away, and possibly more. Not to mention RFID cloning, which has already been demonstrated. This not only presents a significant security threat to those who chose to wear/implant the chips, but also a significant civil liberties threat for those who fear that government will abuse the technology. Not only is it against God's law to make cuttings and piercing in our bodies (Leviticus 19:28), the Bible has given us a clear warning against having any sort of identifying mark implanted in our bodies signifying ownership to another other than Jesus Christ. With RFID, we are just a few steps away from the Mark of the Beast. 

Source Silicon