I think FAT is a fair baseline. It can be implemented in a few dozen lines of code. Support for it is ubiquitous. It is not encumbered by any active patents. Al

I think FAT is a fair baseline. It can be implemented in a few dozen lines of code. Support for it is ubiquitous. It is not encumbered by any active patents. All the alternatives I have seen proposed are both considerably more complex and not ubiquitously supported.