A QR Code Solution for Tokyo's Subway Safety Gates
finding a cost-effective solution for installing safety gates on the Asakusa subway line. The existing radio system was expensive and impractical, as it required modifying trains operated by multiple companies.
a QR code reader system. Inspired by his experience with barcode readers, he envisioned a system where cameras would scan QR codes on train doors to synchronize the opening and closing of platform gates.
This approach offered several advantages. It was significantly cheaper than the radio system, costing only 2.7 million yen for QR code stickers on train doors. Additionally, it eliminated the need to modify trains, saving time and money for the collaborating companies.
Denso Wave, a company specializing in QR codes, partnered with Okamoto to develop the system. They conducted extensive tests to ensure the QR codes could be scanned accurately, even under challenging conditions.
The system was implemented successfully on the Asakusa Line, with cameras installed above platform gates to read the codes on arriving trains. This innovative solution not only saved millions of dollars but also enabled the timely completion of the safety gate project.
Okamoto's invention has been recognized and adopted by other railway companies, demonstrating its effectiveness and potential for improving safety across Japan's rail network. His dedication to improving train safety has made a significant impact, protecting countless lives.