[erlang-questions] How to exchange sensitive data with ports?

[Illo de' Illis]

I doubt your advices would be useful to the scenery the original  
poster is working with. Since she was afraid of a pipe I guess she is  
already dealing with an public/untrusted system, and I reckon locked  
memory (which I frankly wouldn't call "security by obscurity") and / 
dev/TTY access for user input to be a good starting point.

Ciao,
Illo.