US megachurches embrace software to keep track of members

On any given Sunday, about 5,000 kids come into the children's ministry at Prestonwood Baptist church in Plano, Texas.

Families form lines and check in at 32 kiosks spread among the church's six entrances, swiping Quick Passes at the self-service machines.

Parents register the kids for classes, then a kiosk spits out sticky name badges for both parent and child with identifying information: child's and parent's names, classroom and any food allergies.

About a dozen of the kiosks...