Actually, most of the Christian churches have the need of count the number of attendees to each devotional, this process can become very tedious and some cases can be impossible if a person is the attendant. Why the technology is an ideal solution, how can technology solve this problem? Very simple, people only needs to press a button that sends information to a computer. That stores the number of times that the button has pressed.
About child care, many churches have a devotional for children and/or a room for babies, where people care for children while parents are learning in the devotional, but what would happen if a child has a problem and the attendants needs to talk with the parents? Generally, they search bank to bank in the church; this puts all the attention on them and not in the message. A solution using the technology would be: deliver some kind of vibrator that vibrates when the child has a problem, parents will know that that they have to go out and instructors will be outside waiting them. Is a simple Solution but very helpful in churches.