Best regards from the Alps Renato
This is amazingly innovative.
We have seen letter switching examples and how the brain will try to fill in the gaps.
This is superbly unique and justifiably a patent and trademark.
The demo works.
The rules may be simple. But as the old boat repairman story says, sometimes you need to know where to hit the hammer.
Please, please don't use this for evil.
Best regards from the Alps Renato
If you’re serious, then release a copy-left license for the patent (but not necessarily your implementation/product/sdk)
Otherwise, just add your commercial licensing terms to your website already so people aren’t misled into thinking they’ll be able to do anything with this idea unless they pay you.
More info detailed at my top-level comment.