[Anakin System Use Case] The ease or difficulty of opening a container is visually apparent.

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last updated：Jun 21, 2021

HALデザイン研究所

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The ease or difficulty of opening a container manifests in actions unconsciously. This can be measured easily and casually, without any specialized knowledge, just as you are.

**What is the Anakin System?** It is a system developed by our company that can measure human movements without any attachments on the body and while wearing casual clothing. **Evaluation Method** Using a container that opens by twisting as an example, we had participants open two commercially available containers, measuring the force required to open them while simultaneously recording the movements with the Anakin System. Additionally, we measured muscle strain using electromyography. **Evaluation Results** Firstly, the two containers had different shapes, and when handed over without any instructions, it was evident that the way they were held and the opening movements differed. Below is a description of the findings. ■ Difficult-to-open container - The shape forces the user to grip the side of the bottle, causing both elbows to rise and creating a wide gap that hinders the application of force. ■ Easy-to-open container - The bottom part of the bottle is designed for easy gripping, allowing both elbows to remain low and close to the body, making it easier to exert force. For specific measurement examples, please refer to the attached materials.

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【Classification of Containers by Opening Method】 - Twist - Push up or pull up with fingers - Pinch and pull up - Lift or pull up with fingers - Push with fingers - Tear with fingers - Spread and open with fingers Please refer to the attached image for specifics. 【Steps to Develop Easy-to-Open Containers】 ■ We measure the force or torque required to open containers using our proprietary measuring instruments that can vary these parameters for various actions performed by people when opening containers. - Feels easy to open - Feels like this is the limit - Feels impossible ■ Evaluation of Commercial Containers We have various people open commercial containers, measuring the force or torque applied to the container at that time. We then ask for their impressions on ease of opening (or difficulty) and record the method used to open it. Simultaneously, we measure the exerted force during their opening action. ■ Evaluation of Easy-to-Open Structures We devise and prototype shapes, structures, and materials that require less force or torque for various opening methods, and we measure the force or torque. ■ Development into Products Among the devised prototypes, we incorporate items that can produce values exceeding the force or torque rated as "easy to open" and finalize them as products.