IrDA as a Foolproof Non-cable

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Mismatched connectors and wiring are impossible with IrDA. Speed and configuration parameters are transparently negotiated at connect time, and a common set is used for the connection. IrDA at 4 Mbps is compatible with 9.6 Kbps IrDA. Additionally, the IrDA connector is completely sealed, inexpensive, and available from multiple vendors.