In future you can just place the phone on the desk for charging
If you read my earlier blog post on wireless power transfer here, I was saying that this technology is still at infancy and few companies are working on this to improve.
The problem is inefficiency because you loose power when transmitting on air. Although this is an obstacle, the thought of putting your phone on a table without plugging it and the phone just get charged like that is very appealing.
So much so, Apple is now working on this technology for its next iPhone. Read here.
For now there will be a charging dock where the phone had to be placed on. I believe soon there will be concealed docking pads placed everywhere on tables in reataurants, cafes and airports.