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You are funny bro. Do you mean we should go through all the stress because of casinos? That's worth it to preserve our money but not fair at all. Family members should have their private lives, what if a member doesn't want some or the entire family to know he/she gambles? It's so ridiculous and self-serving by casinos to be candid. I will now be asking my family members A, B, C, D...etc, and even the extended family members who came to visit whether they are gambling at a particular casino so that our IPs will not clash. What about your friends, your family member's friends, will you ask all of them? The link is countless, how convenient is that simply because you want to gamble?
The solution is pretty simple, mandatory KYC before gambling a penny or depositing a dime.
Casinos have to protect themselves also, just think of what's going on in this forum with multi-accounts and whenever somebody is caught we have the same story, it was my brother, it was my wife and so on! With casinos, it's clear as the sky there will be hundreds wanting to take advantage of depositing bonuses and claiming it's their family playing, their relative, their cat opened by mistake the betting app, and so on!
Mandatory KYC with the same clause that some bookies have, a household can have more than one account but only one account will receive bonuses and that's it! As I said before, if two members of the same family feel the need to hide their gambling actions from each other then that family has far more serious issues than getting banned from a casino!