pn53x-sam is a utility attempt to test a simple connection with a SAM (Secure Access
Module) in several modes.
To run this utility you must have a SAM (like the NXPs P5CN072 chip)
successfully connected to your PN53x chip.
Warning: the SAM inside a Touchatag/ACR122U is not hooked to the PN532
but to the intermediate controller so pn53x-sam wont work with a Touchatag/ACR122U.