Mobile payments start-up Card.io initially started out as a Square competitor, but could never gain any traction and has now been acquired by PayPal....
Creating buzz around a mobile payments service is fine, so long as the taglines are not too outrageous. However, "Interchange Zero" crosses the line....
mPowa -- a British start-up that has just launched in the US -- thinks that we need another Square-like mobile payments service and it may have a point....