The Transportation Security Administration on Wednesday purchased 300 additional advanced imaging technology screening machines for $44.8 million.

The machines will include "new automated target recognition software," which replaces passenger-specific images "with a generic outline of a person," according to TSA. Though TSA has yet to finalize which airports will receive them, the machines will be deployed "in the coming months." There are nearly 500 such screening systems in use at 78 airports across the United States.