The market for mobile point-of-sale sales transactions tools has become much more competitive in 2012, and the competition is forcing some firms out. Citing low margins, VeriFone is pulling out of the sector, and analysts say others may follow. "The market has become saturated, and a lot of people are realizing that there isn't enough of a market for them all to share," said Dave Kaminsky, emerging technologies analyst at Mercator Advisory Group.

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