[fprint] multiple devices: U.are.U 4000B

[Paolo Arnaldo Dallari]

Hi all,
I continue my work on writing an Identification Application with libfprint,
And I have a question:
Can I plug two equal devices to the same computer and use them
separately with libfprint?
I mean, If i buy two U.are.U 4000B and I plug them in my computer; can
the application libfprint_demo light up one device or the other one?
I want to use two device, reducing the possibility of false negative
and having a faster response.

I tried with U.are.U 4000 and they couldn`t be plugged together, the
system (yes linux os, not just libfprint) can see only one device and
lights up randomly one or the other one.

regards,

Paolo