You may want to read
http://getmarked.org/
getMarked provides instant one click viral crowd funding for everybody in the world at web scale.Excellent
* QR getMarked codes on product labelling? = easy smartphone etc. getMarking of a 'physical' product
* perhaps some form of other innovative off-line > online getMarking route? Amazon etc. send out complimentary vouchers with deliveries - a printed getMark 'voucher'?
Just thoughts... apologies if I missed reference to any of the above in the content - need to re-read to fully appreciate!