Host Mo Rocca shows us the medical device giving shots with pressure instead of a needle; testing your eyes for glasses with an app on your phone; the airbag backpack saving people during avalanches; and, a glimpse at one family's life during the 1930s.

Host Mo Rocca shows us the doorbell just for your dog; the toddler carrier that lets kids stand up for the ride; the app that counts your calories by taking a picture of your food; and, when music became mobile.