What is the shortest way to close a deal/sale?

Sales is a process its  not important how quick i can close a deal the important bit is how quick i found the needs & the objections and also it depends who open the deal A SELLER or THE BUYER .

Face to face meeting with the customer . 

i totally agree with zeeshan, same time you short way by easy explanation about his need to product/service 

The shortest way is to adopt and follow appropriate systematic sales process that suits a particular product/commodity/concept sale, to avoid waste of time in closing a sale.

we know that its process but seriously its walk along with what the sales man want the relation to be 

he can sale very fast and then what >> 

sometimes you need to focus on the customer and even your price up high you will make it down a little bit so you can keep him in your pocket and thats if you have a far to think what the output from this sale is it just once or its start after that >>>>