[nutjob2]

For those not familiar with using powered drugs nasally, a credit or debit card is also usually a part of the drug taking toolkit. Its one of those odd occasions when you need both cash and credit.

[portaouflop]

You usually keep the credit card though and not hand it to someone for a drink 5 minutes later. Using banknotes is not advisable anyway. If you need to do this shit be smart about it.

[nutjob2]

True and so probably a lower percentage of cards have cocaine on them, but they do share contact points such as swipes and touches.