Handheld devices are priceless, but shopping for one does require some attention to detail. Most mobile devices will handle its users needs with ease with one exception - power.

Finding a handheld with an ample processor and memory make all the difference when it comes to purchasing a device. To begin, a handheld should have a minimum of 200 MB of memory or the capability to expand the memory through SD, SDIO, and multimedia cards. When looking at RAM, note the amount of memory that is classified as "volatile." Volatile RAM is a type of memory that erases when the handheld is shutdown or there is a power interruption. While this RAM can be useful, too much of it is a waste of space.

Secondly, consider the processor speed as measured in megahertz. A 520 Mhz processor is exceptional and will allow the handheld software to run quickly and efficiently. Anything in the 200 to 300 Mhz range will not perform as well.

Another characteristic to look at when shopping for a handheld is the handheld's compatibility with current medical software. The device's operating system needs to be up-to-date for it to be of any use to its owner.

In today's market, a physician can pick up a decent to exceptional handheld for anywhere between $200 and $400.