I need to detect the card type: Debit or Credit when the customer is on website's checkout page.
I am using the library i.e https://github.com/braintree/credit-card-type already to determine the card brand i.e Visa,Amex,Mastercard etc. But these don't provide the card type info. Is this possible at all.
Yes, it is possible. You need to get a list of BIN (Bank Identification Numbers) which correlate to card type (debit or credit). You then can compare the BIN number, which is the first 4-9 numbers of the card, to that list which will tell you the card type.
Processors like Worldpay and Card Connect make lists like this available. I am unsure if there is a cost or not. I found this free one but you'll need to massage it a bit to consume it programmatically. This API also claims to be free.
