Shuichi Tsutsumi (@shu223) | Twitter

The latest Tweets from Shuichi Tsutsumi (@shu223). Freelance iOS Engineer/Work in SF w H-1B/Author of “iOSxBLE Core Bluetooth Programming”/Developer of Fyuse, BONX, WHILL, etc. https://t.co/co9Fwmi04P. San Francisco, CA