No, keep the leading 0x. John 0xdeadface Smith has the added social advantage of also enabling the 0pointer-is-superuser security hole in older versions of sys

No, keep the leading 0x. John 0xdeadface Smith has the added social advantage of also enabling the 0pointer-is-superuser security hole in older versions of systemd, if one can convince people that one never goes by "John". (-: