San Bruno, Calif.-based Global Lost & Found said today that it has raised an undisclosed amount of money to support its company focused on tracking and recovering portable electronics, such as iPhones. The first round of capital was led by by DFJ Frontier. Coincidentally, a survey was also released today revealing how big of a problem this is. It found that in the past six months, about 31,544 mobile phones were left behind in New York City taxis. In addition, another 2,752 other handheld devices such as laptops, iPods and memory sticks were also forgotten. The study was funded by Credant Technologies, and took place in both London and New York. Of the lost devices, nearly two-thirds of cab drivers reported that the owners were reunited with their phones, with 80 percent of cab drivers handing them into their companies or personally contacting the owners.