Lanwench said:
There's no way to hide them, but you can password-protect a PST file,
if that's what you're using -
Of course you have to wonder why they aren't using a secure version of
Windows (i.e., NT based) which would place the PST file under their own
profile to which only they (and administrators) have access. Don't
expect security on a non-secure OS. With NT, you can even restrict the
PST file from administrators by using EFS to encrypt the PST file (be
sure to list only your own userid). Administrators can still take and
change ownership but they won't be able to read the file (and so they
won't be able to help you regarding its contents, either). If you use
EFS, be sure to export the certificate so you can restore the file on a
new install of the OS (like for recovery) and have the certificate
available; else, you won't be able to read the file anymore, either!
You could also just list the last 4 digits of the credit card in the
note - unless your wallet is so insecure that anyone could get it to
check which full credit card was being referenced.