What is Qi Wireless Charging?

The Qi wireless charging standard from the Wireless Power Consortium (WPC) is having a relatively good year.
Qi is the universal standard for wireless charging of battery-operated devices like cell phones, iPods, MP3 players, and cameras.
The wireless power transfer occurs through electromagnetic induction. With inductive charging, the required power reaches the device not through a traditional cable but rather wirelessly through the use of electromagnetic fields. The principle is very simple: the Qi Sender (Charging Station) transfers the required energy to the Qi receiver (the mobile phone).