HopePower.com 是一家地方性的电气工程承包商，并且已签约聘请小夏处理营销工作。其网站一直是一个信息类网站，完全由静态网页组成。小夏打算将网站升级，添加在线下单功能并保证结账流程符合 PCI 标准。有人建议她采用常规的 Visa/Mastercard 结账选项，但她觉得客户以这种方式结账需要很长时间，并非理想方案。 哪种付款方式允许客户使用 Gmail 帐号中存储的 Visa 卡结账？

Google Pay allows customers to use payment methods, including Visa cards, saved in their Google Account (which is linked to their Gmail account) for online purchases. This streamlines the checkout process by pre-filling payment and shipping information. Venmo is a peer-to-peer payment service and does not directly use cards saved in a Google account for merchant checkouts. Square Wallet was a mobile payment app that has been discontinued. PayPal is a separate payment platform that requires users to link their cards directly to their PayPal account, not through their Gmail account.