Te real problem is that the new law starts applying at 1 of January of 2013.
So since the day 1 of January I have to use that certified software in a POS
to declare every sale in order to give the file in the so called SA-FT format
at 8 of every next month (so 8 of February for the whole January month).
For those declaring less than 100.000€ they can use a Bill Book (don't know
about the exact American name), but they cost much than the printer itself
and are out of stock (don't need to ask why). A lot of commerces have already
closed because of this new law.
So yes the news that some of you see about Portugal being almost like Greece
in terms of economic and social terms are very true these days.
And even with all this I am trying to make a 100% Free POS (maybe the first
100% Free POS in my country to not say the world since I don't know anyone
else who'd done this).