Wherever I went, I needed a constant handler and guide, and the spotty wireless signal often left me stranded the video window on my laptop in Texas frozen as the Robot Rachel in New York went dead.

WSJ: My Life as a Telecommuting Robot

Or has the dog simply learned that the best way to please his handler, and perhaps earn a treat, is to signal the presence of drugs?

FORBES: Man's Best Friend Is No Friend to the Fourth Amendment