Family Plan (Restrict by address)

I just thought of another way to look at restricting access. Originally I was looking at a way to have the CBSubs look at the address fields to make sure the sharing was someone in the same household, but that would mean having to look at the street number field, and street name field, possibly postal code too. Then I realized that looking at the IP address might be a better option.

Would looking at the IP address open up another way to validate the sharing or would I approaching it the same way as you suggested earlier?

IP Address wouldn't be very reliable. For example if one registers using their phone and its mobile wifi they'd have a different IP Address. Address check should work fine for this, but is prone to a lot of user error if the addresses don't match example. It is likely going to be a lot more trouble than it's worth trying to restrict this to households. Giants like Netflix have attempted that in the past as well and failed. It's just too easy to circumvent to be worth investing so much development time into it and ultimately it causes UX problems for legitimate users.

I agree with you. The site I have in mind has few members and I think I may enable the admin approval option and then manually check the addresses to make sure before approving.

Appreciate the help and advice!