Paper Receipts
Most stores now give you the option to either disregard the receipt in general, or you can have it emailed to you. Digital records and digital bookkeeping have become the new mess-free way to organize your purchases. Let's save the environment and stop printing those mile-long CVS receipts, huh?
Paper Airline Tickets and Passes
Along the same line as hotel key technology, some airports allow you to save your boarding passes to your virtual wallet on your phone. That lets you skip the check-in line and simply press a button on your phone to alert the airline that you're there. Talk about saving time at the most annoying place to be late.