Randall uses his phone to keep track of most things in his life. He wanted someplace safe to keep his private information so that people who can use his phone will not have access to it.
I need someplace to store sensitive information on my phone.
Randall searches through the app store for an app that will help hide his information.
Download
Calculator App
Wow! An app that acts as a calculator but also a secret vault?
The app finishes downloading and Randall sets up his passcode for the Secret Calculator App.
1010111
1 2 34 5 67 8 9
Randall stores all of his sensitive information into the app.
Diary
Passwords
Files
Notes
The next day, Randall goes to school and his friends come up to talk to him. They want to borrow his phone for a second.
Sure
Hey Randall, can we see your phone?
Randall's friends use his phone. Randall does not need to worry that his friends will come across sensitive information stored on his phone because it is hidden inside the well-disguised calculator app.