viktorTarasov/OpenSC — comment on commit 3abae1163f5c10fa30e92c6300a84aaa184d7359
File:  line 0
By viktorTarasov:

Before, to build the 'one-pin' version of pkcs11 module, the number of recognized 'PIN' objects was simply cut to one and the first PIN where used for the login into the unique slot.

https://github.com/viktorTarasov/OpenSC/blob/master/src/pkcs11/framework-pkcs15.c#L948

(Note: this number is cut even before the distinction between User, So, Unblock PINs where made. UserPIN had to be mandatory the first PIN in the list.)

Now, the unique pkcs#11 module can be configured ('pkcs11' section in opensc.conf) to present only one slot where for login is used
the authentication object defined as 'UserPIN' .
So, in my mind, it brings to the same result.