krrk bs's janet shamlian. >> packages are a frequent front door delivery. and those purchased online were a big part of the holiday, topping 20 percent of sales. the more startling number is the e-commerce return rate, 25 percent compared to 8 percent for a physical store. >> and this is what that can look like. mountains of cardboard and plastic packaging with valuable merchandise inside. >> the retailers really aren't equipped to take the product back. >> the typical retailer hasn't invested in this yetk and you will see all their returns come backk they pile up, they sit and often quarterly or twice a year they might liquidate them for pennies on the dollar, or even potentially destroy them. >> tobin moore is the c.e.o. of op tor to that helps companies deal with a tsunami of returns. >> we have these new rackings behind me, we put in cases. >> this mass ich warehouse outside nashville is one of three dozen optoro uses across