After introducing the “dash buttons” in March this year, Amazons one-click-ordering-devices are now available for sale (only for Amazon Prime accounts). Currently products of 18 brands are available and equipped with this wifi-enabled device. The consumer just need to connect the button to a wifi and select the deposited product (via the Amazon smartphone-app) once. Having done that, just one “click” is necessary to reorder the desired product.
More information: developer.amazon.com