Reaching this vision could result in more natural human prosthetics, skin substitutes or even a second skin with additional functionalities. These e-skins aim to maintain the functionality of conventional electronics while mimicking skin or tissue-like properties such as flexibility, stretchability and biocompatibility. Key to this expansion is the field of flexible electronics, which promises to bridge the living and digital worlds by means of electronic skins (e-skins). As these technologies move on, the boundaries between humans and machines are becoming vaguer, and new aspects of human perception and device interactivity are being noticed. At the same time, humans are more connected than ever thanks to the numerous portable and wearable gadgets continuously supervising and shaping our day-to-day life. Novel robots and computational systems are behaving more “human-like” due to the enormous amounts of data amassed by sensor networks and scrutinized by AI platforms. Notions like the Internet of Things (IoT) and artificial intelligence (AI) are increasingly spreading around the world and demand for new kinds of human-computer interactions (HCI). The evolution of modern electronic systems has given birth to ever more intelligent machines and systems, which are rivaling human intelligence. The aim is to give the reader a general perspective and highlight some new avenues of research, toward artificial magnetoception. Here, the background, fabrication techniques, and recent advances of this field are reviewed covering important aspects like: directional perception, geomagnetic field detection, on-site conditioning, and multimodal approaches. This approach to tracking provides an alternative or complement to optic-based systems, which usually rely on cameras or infrared emitters, that cannot easily capture fine motion when objects are far from the source or the line-of-sight is obtruded. Due to their vectorial nature, these stimuli can be used to track motion and orientation in 3D, opening the door to various kinds of gestural control for interactive devices. Adding a supplementary information channel-an electronic sixth sense-allows humans to utilize the surrounding magnetic fields as stimuli for touchless interactions. New developments have also introduced nonstandard sensing capabilities like magnetic field detection, to spawn the field of magnetosensitive e-skins. So far, the focus has been mostly on reproducing the traditional functions associated with human skin, such as, temperature, pressure, and chemical detection. Electronic skins (e-skins) have established themselves as a versatile technology to restore or enhance human perception, and potentially enable softer robotics.
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