Unverified85% confidenceSolutionTime unknown
验证屏蔽有效性的简易方法：将带NFC的手机或非接触卡放入套内，靠近读卡器/POS机无反应则屏蔽有效；能读到则说明屏蔽层缺失或有缝隙
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Unverified验证屏蔽有效性的方法：将手机NFC或门禁卡放入套内，用手机贴近读卡设备或另一部手机的NFC，若无法读取则屏蔽层有效95% similarUnverified验证屏蔽有效性的方法：将带NFC芯片的卡放入卡套后，用手机NFC读卡功能或刷公交闸机测试，若无法读取即说明屏蔽层有效；购买后应实测而非仅信标注91% similarUnverified验证RFID屏蔽是否有效的简单方法：将带NFC的手机或公交卡放入屏蔽夹层贴近读卡器，若无法读取则屏蔽层工作正常90% similarUnverified验证屏蔽效果的简易方法：将门禁卡或公交卡放入钱包后靠近读卡器，若无法感应则屏蔽有效；这也是收货后自检的可靠手段82% similarUnverified验证RFID屏蔽是否真实有效：将非接触卡放入钱包后靠近手机NFC读卡（如公交卡查询App）或读卡门禁，若无法感应则屏蔽层有效；购买后应实测而非仅信标称79% similar
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