Biometrics
                                             
                                             
                                             Chipping Goods
                                             
                                             
                                             Dataveillance
                                             
                                             
                                             Facial Recognition 
                                             Technology (FRT)
                                             
                                             
                                             Hand Geometry
                                             
                                             
                                             Magnetic Gradient
                                             
                                             
                                             Measuring
                                             
                                             
                                             Passive Millimeter Wave 
                                             (MMW) Imaging
                                             
                                             
                                             Personal Locator Beacon 
                                             (PLB)
                                             
                                             
                                             Remote Control 
                                             Information System (RCIS)
                                             
                                             
                                             Transponder
                                             
                                             
                                             Universal Product Code (UPC) 
                                             Barcodes