More than half of information technology executives say they are increasing risk management efforts related to employees' use of mobile devices, according to a survey conducted by Computerworld. But only 46% of companies currently have a formal policy in place that governs the use of such devices.

A third of the 334 executives surveyed say they're working with third-party providers on managing the risks related to mobile devices.

Hometown Bank in Roanoke, Va., for example, requires employees who use their own mobile devices for work purposes to adopt features like encryption and locking mechanisms if they access some types of information. IPad users have to agree that the bank can remotely wipe data from the device if necessary.

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