http://www.sovereignman.com/expat/italy-to-launch-skynet-tax-collection-system-after-197-yoy-borrowing-increase/

The Italian tax authorities are now field testing a new system called ‘redditometro’, a database that automatically collects and analyzes taxpayers’ tax data vs. spending data based on automated collection of credit card and banking information.

For example, if the credit card reports show that you have an expensive gym membership… or perhaps you bought too fancy of a mobile phone, then the system will flag you if your annual tax liability isn’t commensurate with such spending habits.