: Various apps on the Google Play Store offer "Hacker Screen" simulations where you can set a timer to trigger a fake lockdown on a friend's phone. How to Tell a Prank from a Real Scam
This simulation uses several psychological triggers common in real tech support scams: Fake FBI Lock Warining Screen Prank
The Digital Guillotine: The Psychology and Ethics of the FBI Lock Prank : Various apps on the Google Play Store
Stay safe, and happy pranking (within the bounds of the law). charged with "misuse of computing resources
The prankster was identified via security cameras, charged with "misuse of computing resources," and suspended for one semester. His "hilarious joke" cost him $4,000 in legal fees.