Unlock smartcard PIN without decrypting a file

[Journeyman]

Howdy,

usually I unlock my Yubikey and enter its PIN when I need to decrypt a
file.

Sometimes I'd like to unlock the smartcard without really interacting
with the private key stored there.

Is there an SCD command that allows me to do this? I've read the GNUPG
manual but couldnt really find anything for this, my (perhaps limited) 
understanding is
that SCD commands do not require the PIN.

thanks for any suggestion!

regards,