I heard they got people tracking who gave money and who didn't.

Otherwise how they get such detailed figures?
Every week you go, put money in envelope. Fill up the form: your
particulars & how much you want to donate to
1. Tithe (compulsory % of salary)
2. Offering "Give what you feel is needed"
3. Building fund "Want to worship in a nice church, not
free"
4. Donations (to poor)
Can pay by cash, credit card or GIRO.
Next week your cell group leader will give out your group's
receipt one by one.
XD