WhatsApp is acting on promises to turn its chat into a valuable shopping tool -- and it's using money as an incentive to make it a good shopping tool. The Facebook-owned firm is launching a programming kit that makes it easy for businesses to use WhatsApp messaging for info and support. You can give your phone number to a company to receive information like boarding passes and shipping confirmations, or use a click-to-chat button on a website or ad to start asking questions or get live support. The concept of using a messaging app for customer service certainly isn't new, but WhatsApp has over 1.5 billion active users. This makes business chat more accessible to a large chunk of the human population.