[codedokode]

Make every player pay a deposit which is confiscated when they get caught cheating. Make servers with different deposit levels, so that people who really care about cheating pay over $1000 for example.

Better than having keys which I cannot control on my computer. And I don't play games anyway.

[takeda]

Or allow people running their own gaming servers that they can moderate. Solves cheating problem and when gaming company stops supporting their online game or goes out of business.