Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Credit cards go mobile MOBILE PHONE giant Motorola is experimenting with putting credit cards and payment functions on their line of mobiles. Under the bonnet of the cunning plan is Near-Field Communication (NFC) technology which is a short-range wireless system.

Sci/Tech