Mobile commerce spending exceeded $10 billion during the first half of 2013, up from $8.3 billion in the same period a year ago, according to new survey data from comScore. The company projects m-commerce to exceed $25 billion for the year, up from $20.1 billion in 2012.

M-commerce accounted for 10 percent of total digital commerce during the first half of the year, according to the survey.

Smartphones drove a higher share (6 percent) of total digital commerce than tablets (3.5 percent), the company said. While there are more than twice as many smartphone users as tablet users, the average spending per device owner is 20 percent higher on tablets. ComScore said that is likely because of the platform's higher income demographics and greater similarity to the desktop experience.

Apparel and accessories led m-commerce sales for the first half of 2013, followed by computer hardware and event tickets. Video games, consoles and accessories showed the highest percentage of digital commerce spending occurring via m-commerce (23.7 percent).

"While mobile devices are already extremely influential in the overall buying process, they are also beginning to drive a meaningful percentage of digital commerce," comScore Chairman Gian Fulgoni said in a news release. "One out of every 10 consumer e-commerce dollars is now spent using either a smartphone or a tablet, and growth in this segment of the market is outpacing that of traditional e-commerce by a factor of two, which itself is growing at rates in the mid-teens.

"Any channel shift has the potential to be disruptive to established revenue streams, and it would appear that m-commerce spending has reached enough of a critical mass that key stakeholders must begin to address this new market dynamic today or risk losing competitive advantage."

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