Vishal Sikka is one of the highest paid executives in India - his last known salary a whopping Rs. 48 crore. But the 49-year-old Infosys chief said today he carries a wallet without cash. It was big thumbs up to Prime Minister Narendra Modi's demonetisation move, one that Mr Sikka said has generated "a lot of excitement" and will lead to "much faster much more accelerated adoption of digital payments."