Now this is crazy. We’ve heard of credit card 2.0, but I don’t think we were expecting something so interesting (and so dangerous) like this. What we have now is a credit-card lookalike that is made of stainless steel that not only looks cool alone like that, but it also can be transformed into a small pocket knife. Simply fold the credit card in three easy steps, and you have a knife. It’s called CardSharp. There is no doubting that this thing is cool, but it is also a bit ironic: it shows just how dangerous credit cards can be to the modern consumer. So don’t get too crazy with those things. But maybe this…