I am from India, I have multiple cards but most because there is a surge of credit card offers in India, most banks are providing free credit cards and offers to get people signed up.
So many of those cards are just used to utilise those offers to get discounts and a certain select websites for discounts.
But I practically use my debit card, a credit card hooked to online payment services ( paypal et all ) and a backup credit card when I cross the limit of my other credit card. That's all.
One other card I use is just when dining out in which I get some % discount/cash back offers thats all.
It works just like any other card, you just select which one you want to use when you make a payment. Here is an example of how it looks like
http://handelsbanken.fi/shb/inet/icentfi.nsf/vlookuppics/10_...
That sounds good and very handy.
The chip based cards ( EMV ) are being introduced in India, rather RBI ( Reserve Bank of India - Controls monetary policy of India) has made it mandatory for all banks to replace the present cards and make them all as EMV.
But its not to merge them but to reduce the frauds.
In the US, a debit card can be charged like a credit card but the funds are obviously deducted from the balance on your bank account. It also lacks the protection and rewards that a typical credit card would have. I just want to clarify that you indeed have two separate things here on one card and its nothing like how the US does it correct?
The selection process is very simple, you just put your card into the machine (almost all the cards nowadays are chip based nowadays but there is also a magnetic reader usually on the right), something like this
http://data.talka.com/files/Yomnani.JPG
then the machine shows amount and you select
1) Credit
2) Debit
Then it asks for pin and that's it.
There are legal differences, too: credit cards are regulated by the Consumer Credit Act, which makes the card issuer jointly liable in many cases. So, for example, if you order a product with a credit card, and the retailer goes bust before supplying it, the credit card issuer is also liable. If you'd bought it with a debit card, you'd be out of luck.
Finally, if your card details are compromised, you've slightly longer to sort things out with a credit card: with a debit card, you could find yourself with no cash at all.
http://www.moneysavingexpert.com/shopping/section75-protect-...
a debit card, a credit card, a backup credit card and my corporate card
I would love a positively fail safe solution to get this down to one card, but to be honest, neither of these top stories offer that. Because at the end of the day, the most common reason for failure in my standard use case is user error on my part.