For example, Mr. Manchin could rework his bill to clarify that family members who talk by email about purchasing firearms from each other wouldn't fall under the requirement that background checks be conducted as part of any commercial sale.

WSJ: Obama's Gun Orders Face Hurdles

When a Nordstrom customer checks out with a mobile POS, they can sign for their purchase and enter an email address for a paperless receipt.

FORBES: Nordstrom Sees Sales Boost From Mobile POS Devices