Contactless payment systems remain largely unfamiliar to US consumers despite a high level of satisfaction with the technology’s speed, convenience of ease-of-use. By contrast, adoption of contactless card payment is high in Australia and the UK but mobile payments remains limited, according to the results of a research study commissioned by NXP Semiconductors N.V.   Only about 20% of US consumers have used contactless payment systems such as Apple Pay, Samsung Pay and Android Pay to make reta...