Ключевые слова: app, business, business finance and industry, buying, cell phone, color image, contactless payment, contract, copy space, credit card purchase, device screen, ecommerce, financial bill, home shopping, horizontal, internet, japan, mobile, mobile app, mobile phone, no people, online shopping, paying, portable information device, purchase, purchase order, retail, screen, shopping, smart phone, surfing the net, telephone, using computer, web page,