I think we have quite some before us until the need for these high bits becomes reality :) Now that you mention pointers, Apple is using unused bits in their v

I think we have quite some before us until the need for these high bits becomes reality :) Now that you mention pointers, Apple is using unused bits in their values for signing and authentication purposes https://googleprojectzero.blogspot.com/2019/02/examining-pointer-authentication-on.html?m=1 https://googleprojectzero.blogspot.com/2019/02/examining-poi... Pretty neat in my opinion