TKay, can you answer a question for me perhaps? do you know if Square customers will have to specifically go in and enable the ability to pay in bitcoin? and if they do not have to opt-in, how does it work exactly? does the merchant have to tap a button just like cash or credit card and this is enabled by default for all? can i go into an unsuspecting shop and pay with bitcoin and the merchant will essentially have no idea besides noticing a new payment icon?