Japanese robotics startup Donut Robotics has announced a capital and business partnership with nursing home operator Charm Care, which is investing 300 million yen (about $2 million) to deploy the cinnamon humanoid robot in elderly care facilities. The move comes as Japan's aging population intensifies demand for care services while a chronic shortage of caregivers hampers the industry, according to PCauto.
From airport guide to nursing home aide
The cinnamon robot, developed over nearly a decade, was initially designed for translation and airport navigation. The current model, cinnamon 1, stands about 1.7 meters tall, features bipedal walking, and uses gesture-control patents and visual recognition AI to learn human actions through video. Charm Care, which operates over 100 facilities in the Kansai and Greater Tokyo areas, began a real-world trial of cinnamon at one of its paid nursing homes in July. So far, the robot handles basic tasks such as companionship and patrol, with elderly participants giving positive feedback.
The partnership goes beyond financial backing, providing cinnamon with a real-world testing ground across Charm Care's network. The next development focus is on responding to caregiver call buttons—a high-frequency scenario in elderly care. The plan envisions cinnamon autonomously moving to a resident who presses a call button, understanding and assisting with their needs. This function relies on VLA (vision-language-action) technology and is still in development, not yet deployed. The team intends to first refine patrol capabilities, then gradually iterate on the call-response function and expand into other care tasks.
Challenges ahead for robotic caregivers
Despite the potential, humanoid robots face significant hurdles in nursing homes. The complex environment and unpredictable needs of elderly residents demand advanced environmental perception, intent recognition, and autonomous navigation. So far, Donut Robotics and Charm Care have not disclosed how much care workload the robot can reduce, nor the ratio of autonomous operation to remote human control during trials. The actual relief effect requires substantial field data to verify.
Industry observers view nursing homes as a highly practical testing ground for humanoid robots. Unlike standardized demonstrations at exhibitions, care settings are full of unpredictable situations. If cinnamon can reliably perform repetitive tasks like patrol, call response, and information delivery, it would prove that humanoid robots can integrate into real, human-centric work systems. Donut Robotics founder Yasusuke Ono acknowledged the current limitations, stating the team prioritizes safety and aims to develop products that meet real-world needs.
Widespread adoption of humanoid 'caregivers' still faces multiple challenges, including complex facility layouts, high costs, maintenance, data privacy, and acceptance among the elderly. The technology remains in the scenario-validation stage, and iteration should align with actual care needs rather than flashy demonstrations.
