Not so sure it would be more secure. At least if a [sealed, tamper evident] envelope goes missing/gets opened it should be apparent that you've had a data breach. In electronic form it could potentially be copied without sender or recipient being aware that it's happened. Of course it needs to be strongly encrypted however it's transported (or stored...) What we really need is legislation requiring personal data to be encrypted at all times, except when being actively processed (and even then only decrypted in a volatile storage system). J Ps. Depending on the amount of data involved and media used, the postal system might even manage a better data rate :-)