[Koha] iphone/android scanner apps?

[david at lang.hm]

has anyone thought of having iphone/andoid apps to act as bar-code 
scanners and handling infrastructure tasks (shelving, checkin, etc)

I know I've heard of such apps that take pictures of the bar code, decode 
it and do various things with it, with the prevalence of such phones and 
the relative scarcity of dedicated bar-code scanners, it seems like having 
something like this would be handy.

David Lang