Coin's 'one card to rule them all' dream certainly seems alluring, but this plastic needs to stay close to your smartphone.
The new system will hopefully bridge the disconnect between McDonald's delicious food and hellacious ordering experience.
In its bid to boost its acceptance in physical retail stores, PayPal has introduced technology that will enable people running its app on smartphones to automatically check in at stores and restaurants.
Facebook's new mobile payment system may place it in direct competition with PayPal.
Unlike other iOS-based card readers, there's no dongle required with Flint. It uses the camera on an iPhone or iPad to scan credit card numbers.