+ 0 Votes Clarify robo_dev 1 year ago What phone, what email? Cell phone, office phone system, iPhone, cordless phone, Satellite phone? Most cell phone protocols (e.g. GSM) already have encryption, and normally such security is not necessary within a building or home. For email, do you mean webmail (which often uses SSL encryption via HTTPS), an office email system such as Microsoft Exchange, or the transmission of email over the Internet??