I am probably the only person interested in this sort of thing, but in case anybody has an old PalmOne infrared keyboard and for the sake of nostalgia or convenience or whatever wants to use it with a newer device, I wrote up instructions on how to interface the keyboard via Bluetooth.
Talking of nostalgia, doesn't the phenomenon suggest that there is something not quite ideal about our current relationship to the past? The past is really real. So why feel nostalgia, when our past actions and experiences are really real? In heaven, perhaps, our memory will be so vivid that our past lives--transformed in a hindsight illumined by the beatific vision--will be fully present to us.