How safe is it to deposit checks using smartphones?

In my bank statement this month, there was an insert about depositing checks to my account using either an Android phone or iPhone. It looks pretty much all you do is take a photograph of the check, confirm that the amount is correct, and Bob’s your uncle. I’m a little skittish about this though; is it really secure?

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Story added 12. March 2014, content source with full text you can find at link above.