A new feature among big etailers provides yet another way for their customers to shop online, and the trend is catching on: shopping by smartphone. It’s a growth market, and a potentially lucrative one. Take Amazon.com (NASDAQ: AMZN), for instance.

“In the last twelve months, customers around the world have ordered more than $1 billion of products from Amazon using a mobile device,” Jeff Bezos, founder and CEO told investors in July when the e-tail giant announced its second quarter sales and earnings.

Major retailers may be able to offer remote access to customers who want to make purchases using mobile devices, however, until recently such bells and whistles were not available in small business software packages for ecommerce websites.

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