Apple Watch やAndroidのスマートウォッチもありますが
Tappy Technologies Limited – Wearable Token Service Provider (WTSPTM)
To make everyday transactions in the connected contactless world easy and secure on any wearable accessory. Tappy’s wearable contactless payment technology makes it possible for brands to enable consumers to add their choice of payment card to watches, jewellery, fashion items, and more.
