  We propose the construction of a prototype scanner designed to capture
multispectral images of documents. A standard sheet-feed scanner is modified by
disconnecting its internal light source and connecting an external
multispectral light source comprising of narrow band light emitting diodes
(LED). A document is scanned by illuminating the scanner light guide
successively with different LEDs and capturing a scan of the document. The
system is portable and can be used for potential applications in verification
of questioned documents, cheques, receipts and bank notes.
