Went to pick up my son at school last week, and was handed a field trip permission form for a field trip that was coming up later that week.  Previously, I would have had to bring the form home, fill out all the insurance and other information required, and remember to get it back to school before the field trip date (lest I get the frantic call from the school when they can’t find the form if I’d forgotten to return it.)

Instead, I pulled out my phone, brought up the appropriate card, filled in all the information right there, and handed the completed form back to my son’s teacher.  Total time: 30 seconds.  Total hassle: zero.