When looking into a new bring your own device policy, J.D. Harrison wrote on the Washington Post's blog that companies should be aware of the clear risks the program may carry. There are plenty of benefits, but companies must invest in things like unified endpoint security and mobile device management to make sure all of their assets are protected.

"By allowing employees to bring their own devices, you introduce an element of randomness," Harrison wrote in the news source. "Beyond the well-known Apple versus PC argument, there are also many operating systems out there in the land of smartphones: iOS, Android, Windows, Blackberry, Ubuntu Linux and more. Will they be able to work with your own devices and the devices of their fellow employees? Maybe. Maybe not."

Another issue is compatibility, which Harrison said companies need to look into as soon as possible. It's important to figure out whether documents and programs the business uses will even work with the employee's preferred brand of smartphone or tablet.

A report from Cisco said that by 2015, the number of connected devices per worker is going to be 3.3, with 95 percent of respondents to the Cisco IBSG Horizons Study saying employee devices were allowed. These companies need to have unified endpoint security to cover all of these employees' devices.