Digital yarns or conductive yarns are the ones that enable data transmission. In particular, smart clothes woven
by both ordinary and digital yarns are more than wears, and eventually become wearable and mobile computing devices.
Emphasizing a high potentiality of such clothes, we firstly introduce digital yarn that we developed, presenting its characteristics
and a way of assessing its data transmission performance. Secondly, this paper presents health wear with ECG
sensors and a circuit connected by digital yarns. Finally, it discusses healthcare services that such clothes can provide
Keywords: Body area network, cloud computing, data transmission, digital yarn, healthcare, smart clothes, wearable computer.
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