If all bins and objects had barcodes on them, then you could just scan the object and the bin you are placing object in and a computer could keep memory and track of locations of all stored items. Would there be a problem in using such a method? Of course, if someone gets in a hurry and doesn't scan then you are back to square one.

At some point when micro sensors get cheap enough, I would expect all objects to be tagged and be locatable through their passive or active sensor tags. I believe this is one problem that should be almost completely solved eventually through the use of such technology.