推荐回答（2个）
银行卡换芯是由于传统的磁条卡磁道信息易被复制而存在安全隐患。相比之下，芯片卡具备密钥加密技术，加密信息随机生成。
芯片卡，又称IC卡，是指以芯片作为交易介质的卡。芯片卡不仅支持借贷记、电子现金、电子钱包、脱机支付、快速支付等多项金融应用，还可以应用于金融、交通、通讯、商业、教育、医疗、社保和旅游娱乐等多个行业领域，真正实现一卡多能，为客户提供更丰富的增值服务。
普通卡是磁条卡。磁卡是一种卡片状的磁性记录介质，利用磁性载体记录字符与数字信息，用来标识身份或其它用途。磁卡由高强度、耐高温的塑料或纸质涂覆塑料制成，能防潮、耐磨且有一定的柔韧性，携带方便、使用较为稳定可靠。例如我们使用的银行卡，就是一种最常见的磁条卡。
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