Last year, the now-silent Fabio Sergio coined the term interaction anxiety as a way of defining certain aspects of our relationship with the mobile tech tools that support our daily activities. The latest symptom comes from urban Japan where, according to an article in Red Herring, drivers are developing an addiction to in-car navigation systems:

"When Ken Harada, a Tokyo computer programmer, lost the remote to his car's navigation system, he called in sick to work. "I can't drive without it," he says of the device. "I was a little scared of getting lost"."