(Dallas-Fort Worth, TX)  —  The DFW International Airport Board is voting on adding tracking sensors at airport security checkpoints.  The board says the new 3D sensors will monitor wait times at T-S-A checkpoints in order to accurately predict them to travelers.  Travelers will then be able to download an app so they can see what the wait times are.  If the sensors are added, they are expected to be put in place by next summer.