Part of me is horrified that I need to do this to get my dive profiles. Part of me also says that my dive computer has worked and helped to keep me alive for weeks underwater so far, not much reason to change it.
Not IRDA, but there was also IRTalk built into some of the Power Book series, allowing native AppleTalk to a diffuse IR access point. I really wanted to try that out but never had the opportunity.
IrDA hardware is tuned for low quality LEDs and Photodiodes that have as far as several meters to traverse. (Aka: more noise issues).
To go Gbps bandwidth, you need higher quality everything. You probably have a better job starting from Ethernet SFP kinds of fiber optics rather than the cheap IrDA hardware.
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You probably will have great difficulty reviving 4Mbps fast IrDA, let alone 1000Mbps protocols that were only ever a spec sheet in practice....
