I've found references to their use as remote controls but now that LIRC does
not seem to be supported these days. Are phone cameras sensitive enough to
R/C IR in their own right ?
I've recently been playing with USB-RS232 converter and Termite (has 14400
Baud setting option ie 36KHz/10 x4 ) capturing of codes via IR receiver/
carrier stipper , works well enough for my purposes but if
there was an off-the-shelf phone-app that outputted the pulse train codes as
HEX test file or something, it might be more generally a simple and useful
tool.