Private and security information for personal identification requires an encrypted tool to extend communication channels between human and machine through a convenient and secure method. Here, a triboelectric‐based transparent secret code (TSC) that enables self‐powered sensing and information identification simultaneously in a rapid process method is reported. The transparent and hydrophobic TSC can be conformed to any cambered surface due to its high flexibility, which extends the application scenarios greatly. Independent of the power source, the TSC can induce obvious electric signals only by surface contact. This TSC is velocity‐dependent and capable of achieving a peak voltage of ≈4 V at a resistance load of 10 MΩ and a sliding speed of 0.1 m s⁻¹, according to a 2 mm × 20 mm rectangular stripe. The fabricated TSC can maintain its performance after reciprocating rolling for about 5000 times. The applications of TSC as a self‐powered code device are demonstrated, and the ordered signals can be recognized through the height of the electric peaks, which can be further transferred into specific information by the processing program. The designed TSC has great potential in personal identification, commodity circulation, valuables management, and security defense applications.

中文翻译：

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基于摩擦电的透明密码

用于个人识别的私有和安全信息需要使用一种加密工具，以通过一种方便且安全的方法来扩展人机之间的通信通道。在此，报告了一种基于摩擦电的透明密码（TSC），该密码可在快速处理方法中同时实现自供电感应和信息识别。透明，疏水的TSC具有很高的柔韧性，可以适应任何弧形表面，极大地扩展了应用场景。TSC不依赖电源，只能通过表面接触来感应明显的电信号。该TSC取决于速度，在10MΩ的电阻负载和0.1 ms ^-1的滑动速度下能够达到≈4V的峰值电压，根据2毫米×20毫米的矩形条纹。制成的TSC在往复滚动约5000次后可以保持其性能。演示了TSC作为自供电编码设备的应用，并且可以通过电峰的高度识别有序信号，然后可以通过处理程序将其进一步转换为特定信息。设计的TSC在个人识别，商品流通，贵重物品管理和安全防御应用方面具有巨大潜力。