上海疚通大￥ SHANGHAI IIAO TONG UNIVERSITY "The Best Technology 2017" at Global Source Startup Launchpad 全球资源硬件创客展2017最佳技术 World's first sonar based gesture control gadget 世界上第一个基于声纳实现的手势控制小工具 bl Welle Turn Any Surface Into A () Smart Interface• "The Best Technology 2017" at Global Source Startup Launchpad 全球资源硬件创客展‘2017最佳技术’ 世界上第一个基于声纳实现的手势控制小工具 • World's first sonar based gesture control gadget