A passenger would have to receive more than 17,000 screenings in a year -- about 47 screenings a day , 365 days a year -- to exceed government standards , the TSA says . The Transportation Security Administration maintains the machines are safe . But a new report from the Government Accountability Office found that TSA agents have been using them to search passengers without proper authorization. A critic complains the study was based on TSA data instead of independent testing .
The Transportation Security Administration maintains the machines are safe . But a new report from the Government Accountability Office found that TSA agents have been using them to search passengers without proper authorization. A critic complains the study was based on TSA data instead of independent testing .