Now Playing: Download your videos from Instagram

Now Playing: George Resch aka 'Tank Sinatra' on what makes a viral Instagram post

Now Playing: Apple is discontinuing iMac and workstation

Now Playing: High-tech credit card will have built-in fingerprint scanner

Now Playing: Website created to help find vaccine appointments promotes another cause

Now Playing: SpaceX rocket explodes during test flight

Now Playing: SpaceX landing ends in fiery crash

Now Playing: Google plans to stop selling ads based on users' search history

Now Playing: Sleep problems associated with smartphone addiction

Now Playing: Twitter cracks down on COVID-19 vaccine misinformation

Now Playing: Verizon advises to turn off 5G for battery saving

Now Playing: ABC News Live: Hidden Figures

Now Playing: NASA officially names D.C. headquarters after Mary W. Jackson

Now Playing: NASA names DC headquarters after Mary W. Jackson

Now Playing: TikTok settles $92 million in lawsuits

Now Playing: YouTube announces new parental controls

Now Playing: The science on halting the gene that causes heart disease

Now Playing: New images of Mars and a secret message from rover

Now Playing: People turn online and to apps to improve mental health during pandemic

Now Playing: Samsung unveils its foldable phones