Coin uses a low-power Bluetooth signal to communicate with the app. If you ever leave your Coin behind while buying coffee, your phone will receive a notification asking whether you left without remembering to take your card. A phone is not required to use the card, however. Search “app store上架規範 【TG电报∶@AB5579】 【安卓苹果商店上架】app store上架規範 【TG电报∶@AB5579】 【安卓苹果商店上架】w0m” from Slim Down Your Wallet with a Card That Does the Work of Eight Credit Cards

Search “app store上架規範 【TG电报∶@AB5579】 【安卓苹果商店上架】app store上架規範 【TG电报∶@AB5579】 【安卓苹果商店上架】w0m”

Coin uses a low-power Bluetooth signal to communicate with the app. If you ever leave your Coin behind while buying coffee, your phone will receive a notification asking whether you left without remembering to take your card. A phone is not required to use the card, however.