For whatever rules you put in place, there will always be people who will not follow them. We can't do anything about those guys. By and large, the majority of our members follow the rules, and if you were required as members of Parliament to start reporting all of that, the administrative burden on you would be outrageous.
For us, it's pretty simple right now. I do maybe a dozen meetings in a busy week, if that. How many people do you meet with in a day?