This paper designs and implements a protocol named Grid Service Request protocol (GSRP) that supports the user 3a access paradigm.

本文设计和实现了一种支持用户3 A访问模式的协议：网格服务请求协议(GSRP)。

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The phone, which has yet to be officially named, has a screen comprised of a grid of pins, which move up and down to form into Braille shapes and characters whenever an SMS message or email is received.

CNN: Braille smartphone in development