TOKYO -- An internet of things (IoT) device developed by a Japanese stationery manufacturer to boost the motivation of adults when writing has proven popular, greatly exceeding crowdfunding goals.

The "Otona no Yaruki Pen" (motivation pen for grown-ups) by Osaka-based Kokuyo Co. is a device that clips on to writing instruments and provides people with a visual representation of how much writing they have done, assisting adult learners preparing for qualification exams. Sales through purchase-based crowdfunding site Makuake reached approximately 34.55 million yen (roughly $230,800), about 70 times the initial target of 500,000 yen (approx. $3,340).

Kokuyo expressed gratitude on the site, saying the support "far exceeded our expectations."

Using internal sensors, the Otona no Yaruki Pen measures vibrations, building up "motivation power" and changing color after prolonged writing sessions. By connecting the device to a dedicated smartphone app, users can advance in a virtual board game with the accumulated motivation points, earning items as rewards with the aim of sustaining daily motivation.

The device is an adult-oriented version of the "Shukudai Yaruki Pen" (homework motivation pen) for children first released in 2019. The company developed the new product in response to feedback from adults saying they also use the Shukudai Yaruki Pen.

Kokuyo launched the device for pre-sale on Jan. 29 under the slogans, "For those who can't continue studying for certifications," and, "Supports those who have trouble sticking to goals." With advance purchases being discounted from the stickered 9,900 yen (around $66) and bundled sets including the children's version as gifts for their donations, sales surpassed 3 million yen (some $20,100), reaching six times the set target, within eight hours of launch. About 3,600 people made purchases before the campaign ended on March 15.

Based on the positive response, Kokuyo plans to release the product for general sales, primarily through its official website.

(Japanese original by Kanami Ikawa, Tokyo City News Department)