Make Money Scanning Products

I recently looked into doing this thing where a company sends you a barcode scanner and you scan the groceries you buy. It's a way to monitor what people are buying and use to gather data. They pay you too...which is neat. Unfortunately I don't think I meet the criteria at this time to join, but I do think it would be fun. My Grandma does it and really likes it. It's not a way to get rich quick, but is a great way to make some extra cash I guess.