Magnets inside mobile phone cases and GPS devices and also the metal in car keys and under-wired bras could affect compass needles, the MCofS warned.

BBC: Reverse polarity a risk to climbers, mountain body warns

It is also planning to launch new speaker docks this year, add more mobile phone cases and more headphones designed for gaming and mobile phones.

FORBES: IPO Watch: Zillow, Skullcandy And Google-backed Xunlei

Mobile commerce, comparative shopping on your phone, mobile bar codes and more all existed and in many cases worked quite well.

FORBES: The iPhone Turns Four: How It Has Changed Us

Today, Rahul Bathija is an entrepreneur at the helm of a successful mobile phone company, Bling Accessories, which makes cases and screen guards.

BBC: Why would you leave the West for India?