And how do these tools work? I understand that showing the logic behind your new power might allow cheaters to abuse it. Still, for regular users, I don't think it's fair if they don't know what hit them, especially if we don't know what triggers the false positive. It's not a nice feeling knowing that you might get flagged for multi-account because your ISP register an IP somebody used previously, for example. I'm not a fan of services that claim they use powerful tools if we can't verify anything from our side.
IP is not the only matric that is considered when flagging multi accounts. There are other things like
[1.] Information from Browser
[2.] Device fingerprint
[3.] Users behaviors. These days they say, social media knows more about you then you do yourself. It's a very big tach.
There are many more metrics that works behind before flagging accounts.