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Peer-to-peer Ink Messaging across Heterogeneous Devices and Platforms

Prasad A, Manoj; Selvaraj, Muthuselvam; Madhvanath, Sriganesh


Keyword(s): Digital Ink Markup Language, Ink Messaging, XMPP

Abstract: Pen and touch interfaces for personal and shared devices are becoming increasingly relevant today, in the context of mobility and ease of use. A key capability enabled by pen-interfaces is that of messaging using handwritten, as opposed to text messages. Not only are ink messages easier to enter than text messages (especially when a full keyboard is not present), they allow the incorporation of other elements such as drawings and doodles into instant messaging. However since ink formats are typically platform-specific and proprietary, messaging across different platforms such as Tablet PCs and Linux-based PDAs poses an interoperability problem. In this paper, we show how Ink Markup Language (InkML), an open draft standard from W3C, can be used to address this problem. In particular, we propose an Ink messaging protocol, and a system architecture for implementing the protocol operations. We have implemented this protocol as an extension to the Extensible Messaging and Presence Protocol (XMPP), an open IETF standard. Publication Info: To be published at ACM Compute 2008.

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