Not really. The problem is not about publishing keys or key servers, but with the cumbersome process of having to enter a hexadecimal string (and having to che

Not really. The problem is not about publishing keys or key servers, but with the cumbersome process of having to enter a hexadecimal string (and having to check an even longer string). The point of using QR codes is to simplify things: the user just scans a QR code, and the key is fetched and assumed to be valid (i.e. no need for the user to check fingerprints).