Signing multiple documents using CSP with PKI device that is QSCD without multiple PIN inputs (C#)

Question

I have been trying to sign multiple documents using CSP with PKI device.

1. I was able to sign multiple documents with signature certificate using/reading certificate as a file, but not using PKI device
2. I'm able to sign one document with QSCD PKI device with PIN that I enter.

References I used are:

• Signing pdf with iText
• Digital PDF document signing
• PIN twice

Question is does QSCD/PKI device somehow allow re-usage of one PIN input to somehow do in one run bulk signing of multiple documents? None of the previous is working since QSCD devices didn't exist (at least to my knowledge)

If someone has experience with this please can you share it.