Question about a perfect private Key store for today's environment

[Aleksandar Lazic]

Dear Heinz,

Am 22-09-2013 10:45, schrieb Heinz Diehl:
> On 22.09.2013, Aleksandar Lazic wrote:
> 
>> What could be a perfect or at least a very good storage of the
>> private Key.
> 
> Spend a little bit money and buy you a smartcard and a reader. Then,
> boot a machine without internet connection from an USB-stick or
> CD/DVD with some live version (e.g. http://www.sysresccd.org ),
> generate a fresh key pair and install it on your smartcard.

Ok, that sound possible for people which have linux or unix experience, 
not the 'normal' mainstream user.

The other question was how can a user could use such a key to sign or 
encrypt his or her mail on e.g. Smartphones?

Best regards
Aleks