Originally Posted by StanSimmons

In DFW, terminal A doesn't yet have working scanners, but terminal D does have scanners. I plan on checking my bags and going thru security in Terminal A even though my flight is leaving from terminal D. I will use the DFW Skylink train on the secure side to get from terminal A to terminal D. The Skylink is very fast (9 minutes max) and easy to use... and it is free.