New Delhi, Aug. 11 -- Do you often use a credit card? When you bought something last time, you probably swiped a card or tapped your phone without a faint thought. That quick, simple action creates a ripple effect of data - a digital trail that's building a surprisingly detailed profile of your life.

It's not just about what you buy; it's also about which places you visit, who you are, and what you might do next.

Here we describe how yourcredit card collects information about you.

I.Transactions tell a story:Every purchase you make, no matter how insignificant, adds a new chapter to your personal story.

Your daily routine: That morning coffee purchase via yourcard can reveal when you start your day and where you work.

Your lifestyle:...