paltemalte writes "Hitachi has just come out with a new crop of RFID tags, measuring only 0.05 x 0.05 millimeters. Compare that with the previously smallest chips at 0.4 x 0.4 millimeters. The new chips width is slightly smaller than the width of a human hair. These new chips could put an end to shoplifting forever, but they could also be used by a government or other entity to 'dust' crowds or areas, easily tagging anyone present without their knowledge or consent. Think easy tracking of dissenters or demonstrators. Will someone come up with a surefire way of neutralizing chips that may be on your body or in your clothing?"