I can claim at least twice. When the statistics on "misplacing" a mobile device are projected, it starts to get scary ... and this is just stuff lost in taxis.

In the last six months alone, the nine-nation survey of leading taxi companies in Australia, Denmark, Finland, France, Germany, Norway, Sweden, Great Britain, and the U.S. indicated tens of thousands of digital devices were left behind inadvertently. The U.S. company polled in the survey, a major Chicago cab company, reported the highest number of losses per taxi of all firms studied, both in mobile phones (3.42 per cab) and PDAs/Pocket PCs (0.86 per cab).

Based on the large size of the Chicago company's fleet, the statistics indicate a staggering 85,619 mobile phones, 21,460 PDAs/Pocket PCs, and 4,425 laptops left in the firm's licensed cabs during the six months covered in the study. Only London, with 0.21 laptop PCs lost per cab versus the Chicago firm's 0.18, was higher in any category.

The point of their investigation is that it is more and more important to use passwords and encryption in mobile devices, particularly highly data capable smartphones which would slip under the radar of most corporate IT departments (they worry about the laptops, meanwhile the phones take over the mobile data function).