Recent Advances in Tactile Sensory Systems: Mechanisms, Fabrication, and Applications Tactile sensors are crucial for human-machine interaction (HMI) and have significant potential in intelligent robotics, wearable devices, prosthetics, and medical healthcare. This review summarizes recent advances in tactile sensory systems, including piezoresistive, capacitive, piezoelectric, and triboelectric tactile sensors. It also discusses state-of-the-art fabrication techniques such as inkjet printing, 3D printing, 4D printing, and transfer printing. The review highlights the potential applications of tactile sensors in intelligent robotics, wearable devices, and prosthetics, as well as the challenges and future development trends of tactile sensors. Tactile sensors mimic biological functions by converting mechanical stimuli into electrical signals. Piezoresistive tactile sensors use changes in material resistivity to detect pressure, while capacitive sensors rely on changes in capacitance. Piezoelectric sensors generate voltage from mechanical stress, and triboelectric sensors use friction electrification. These sensors are designed to have high sensitivity, fast response, and flexibility, mimicking human skin. Fabrication techniques such as inkjet printing, 3D printing, 4D printing, and transfer printing enable the development of flexible and stretchable tactile sensors. These techniques allow for the creation of complex structures and improve the performance of tactile sensors. 4D printing, in particular, enables the development of self-healing and adaptive tactile sensors. Tactile sensors have a wide range of applications, including intelligent robotics, wearable devices, prosthetics, and medical healthcare. They enhance the ability of robots to interact with humans and the environment, provide sensory feedback to amputees, and improve the performance of medical devices. The development of neuromorphic tactile sensors, which mimic the human nervous system, is a promising direction for improving human-machine interactions. The review concludes that tactile sensors are a key technology for future human-machine interfaces, with significant potential in various fields. Challenges remain in achieving high sensitivity, flexibility, and integration with neuromorphic systems, but ongoing research is addressing these issues. The future of tactile sensors lies in the development of more advanced, flexible, and intelligent systems that can provide detailed tactile feedback and enhance interaction with the environment.Recent Advances in Tactile Sensory Systems: Mechanisms, Fabrication, and Applications Tactile sensors are crucial for human-machine interaction (HMI) and have significant potential in intelligent robotics, wearable devices, prosthetics, and medical healthcare. This review summarizes recent advances in tactile sensory systems, including piezoresistive, capacitive, piezoelectric, and triboelectric tactile sensors. It also discusses state-of-the-art fabrication techniques such as inkjet printing, 3D printing, 4D printing, and transfer printing. The review highlights the potential applications of tactile sensors in intelligent robotics, wearable devices, and prosthetics, as well as the challenges and future development trends of tactile sensors. Tactile sensors mimic biological functions by converting mechanical stimuli into electrical signals. Piezoresistive tactile sensors use changes in material resistivity to detect pressure, while capacitive sensors rely on changes in capacitance. Piezoelectric sensors generate voltage from mechanical stress, and triboelectric sensors use friction electrification. These sensors are designed to have high sensitivity, fast response, and flexibility, mimicking human skin. Fabrication techniques such as inkjet printing, 3D printing, 4D printing, and transfer printing enable the development of flexible and stretchable tactile sensors. These techniques allow for the creation of complex structures and improve the performance of tactile sensors. 4D printing, in particular, enables the development of self-healing and adaptive tactile sensors. Tactile sensors have a wide range of applications, including intelligent robotics, wearable devices, prosthetics, and medical healthcare. They enhance the ability of robots to interact with humans and the environment, provide sensory feedback to amputees, and improve the performance of medical devices. The development of neuromorphic tactile sensors, which mimic the human nervous system, is a promising direction for improving human-machine interactions. The review concludes that tactile sensors are a key technology for future human-machine interfaces, with significant potential in various fields. Challenges remain in achieving high sensitivity, flexibility, and integration with neuromorphic systems, but ongoing research is addressing these issues. The future of tactile sensors lies in the development of more advanced, flexible, and intelligent systems that can provide detailed tactile feedback and enhance interaction with the environment.