Key to a successful M-Commerce transaction

Besides the ability to carry your mobile phone across the countries like Visa, the process for an m-commerce transaction needs to be much easier than what it is currently.

Currently, you have to send a text message to a particular shortcode. For eg you send a text message/SMS with details of the merchant code and $ amount.

Thereafter a few more steps are required to confirm the transaction.

However, the process should be much easier for eg pointing your phone's camera (used as a reader) to the BarCode chart of the merchant, and pressing an authorization code and amount on the phone.

Or it could use the bluetooth capabilities of the phone to identify the merchant's bluetooth equipment connected to a wired network, and paying directly - rather than thru the text messages/SMS.