Cryptography is a key element in establishing trust and enabling services in the digital world. Currently, cryptography is realized with mathematical operations and represented in ways that are not readily accessible to human users. Thus, humans are left out of the loop when establishing trust and security in the digital world. In many areas the interaction between users and machines is being made more and more seamless and user-friendly, but cryptography has not really enjoyed such development. In this paper, we review the previous research on utilizing human senses and capabilities in cryptography. We present the most relevant existing methods and summarize the current state of the art. In addition, we propose several topics and problems that need to be solved in order to build cryptography that is more accessible to humans. These range from practical implementations of existing methods and utilizing a wider range of human senses all the way to building the theoretical foundations for this new form of cryptography.

密码术是在数字世界中建立信任和实现服务的关键要素。当前，密码术是通过数学运算来实现的，并且以人类用户不容易访问的方式来表示。因此，在数字世界中建立信任和安全性时，人类就不会处于循环之中。在许多领域，用户与机器之间的交互越来越无缝和易于使用，但加密技术并没有真正得到这种发展。在本文中，我们回顾了以前在密码学中利用人的感觉和能力的研究。我们提出了最相关的现有方法并总结了当前的技术水平。另外，我们提出了一些需要解决的主题和问题，以构建更易于人类使用的加密技术。