IN BRIEF: KEEPING TABS ON KIDS VIA CELL PHONE A cell-phone service will allow families to keep better track of their children. Irvine, Calif.-based CATS Communication's CATTRAX technology will allow mobile phones to be tracked through a GPS service and alert parents of when children enter into a sexual-predator zone. The software can be downloaded onto a cell phone and be accessed on a computer so that parents can see where their child is in the neighborhood, how fast they are traveling and their approximate street address. The service costs about $20 per month. Copyright 2006 by United Press International ___________________ The full version of this story is available online at http://www.physorg.com/news65706302.html