No problem. I've been mostly a lurker on HN for a while but this is the first time being put under the microscope. I apologize if I came off as defensive. This is a product that's very close to my heart given the amount of time and effort we've put into the product offering. For the record, none of us here posted the article we are here because of the amount of attention and discussion it has garnered.

Point taken about the errors. There are many things we can improve on all across the board. We made a conscious decision to not let perfect be the enemy of good. The video is done so we won't go back and change that but I will work with the team to fix all of our marketing material to be as accurate as possible. Thank you for pointing out or errors.

With regards to tip entry. Industry standard recommends gratuity be added before PIN but it is not mandatory and is a merchant preference. I can't find all the card network examples easily but I happen to have the AMEX EMV Acceptance Guide open and this is what section 4.2.7 states - "In certain Merchant categories such as restaurants, it is standard practice to enable customers to add a gratuity to the amount of the transaction. There are many different ways in which a gratuity can be added. American Express does not define any specific methods for adding gratuities..." it further goes on to say "American Express recommends that Terminal software enables the Cardmember to add the gratuity amount to the transaction before entering his or her PIN. This enables the transaction to be processed as a normal, “card present” transaction."

In any case, we've all appreciated the various comments on here and it has clearly been the most critical audience of the bunch.