Traveling without a secret key

[Stefan Claas]

Juergen Bruckner via Gnupg-users wrote:
 
Hi Juergen

> It's a good question what to do if you lose your SC or token.
> Basically, it has to be said that you should definitely have a backup of
> your key. And you have to be very careful with your SC or tokens.
> In principle it is almost the same as losing your credit card or
> passport etc. while traveling; you have to provide alternatives (e.g.
> multiple smartcards).

Since you and Andrew are using smard cards or tokens I would like to
ask the following, prior considering purchasing one myself in the near
future.

I use Windows 10 and Android (Samsung A40) and would like to know,
in case the is possible with my smartphone and under Windows 10 to
use a smard card where I can enter a PIN, thus only putting a secret
key without a passphrase on it, for ease of use, because my bank card
also has only a PIN. Is there software for such PIN entering for Win
and Android availalble and if so what Android email client software
would you or Andrew recommend, which allows to use a secret key without
a passphrase from a smard card?

Regards
Stefan

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