Looking for an edge over your competitors? Want to find new applications for an old product? Take inspiration from South Korea's SK Telecom Company. They've been offering the mosquito-repellent mobile phone.

Subscribers simply download the service from the company's website, for a charge of about US$2.50.

How could this possibly work? Well, subscribers activate the service by pressing a few keys and the phone emits a noise similar to the buzz of a male mosquito, which we understand the blood-sucking females tend to avoid. Hmmm….

Or should I say bzzz..