b00n, not really possible when the IP is dynamic.

One other option was to have a registered email, such as xxx@streamyx.com or uni/college email address or referral by already approved members which we can trace.

Also, buyers are partly at fault. If you look at the first link that you've given, if he counter-check/search the number, it would point to another thread in trade dispute section before he bank-in. Question was, did he did own research before purchasing?If we can enforce something like you said, but buyer still did not do his/her research, no point of having such implementation. The thread was started more than 12 days(which was when the deal took place*refer link1).

If you refer link2, his methods is restricted to using a middleman account since his account+wife account is "blacklisted in LYN already".
If buyer use their instinct, why should I banking into another person account when I trade with you? It would be suspicious at the very first point. Problem with buyers was they are not using their sense. If he insist that the account belongs to another person, ask for more stuff to make sure that he have the item, such as taking a picture of the item and written a paper with name side by side.Insist COD and do not made advanced payment until then. Best case, don't deal. Get it from other places which can provide you much more security, such as from retails shop.