gnupgp basics - using same keys with multiple local accounts

[Tomasz Zajączkowski]

Hi All,

I have installed gnupgp on Solaris 10 and created a pair of keys for
myself and imported key from my client. I need use same set for
different local account - unfortunately whenever I try to change the
folder with --homedir option I am ending up with:
gpg --homedir /my-folder
gpg: WARNING: using insecure memory!
gpg: please see http://www.gnupg.org/faq.html for more information
gpg: Go ahead and type your message ...

Is there an easy way how to share the keys between different OS local accounts?

Regards,
Tomasz