Concept handset features see-through camera viewfinder {Engadget Mobile}

Feb 16th 2008 8:25PM we have lots of old slides taken back in the sixties. What I need is what was then called a viewfinder with batteries that you put the slide in then press and it lights up the slide for viewing.. The viewfinders of today do not seem to fit this desctiption at all. Where do I find what I am looking for or are they obsolete?