While such devices continue to improve, handsets such as the Treo 650, Sony Ericsson P910, and HP iPaq h6315 are fraught with compromises and high prices even after carrier subsidy when compared to their closest competitors.

ENGADGET: Switched On -- PDAs, a multiple murder mystery

But while this whole story certainly sounds plausible, the unidentifiable device in the gentleman's hand could be anything from an old HP iPaq to a five-dollar tip calculator, so please do your duty as responsible readers and begin dropping your wild theories and baseless debunks into the comments below...

ENGADGET: Is this the iPhone in the wild?

Handhelds running its PocketPC software, such as HP's iPaq and the new T-Mobile smart phone, now claim 21% of the market.

FORBES: Magazine Article