Now as to explain how the code works: First we have stored the correct passcode in a 4bit x 4bit RAM. Next we ask the user to input a 4 digit passcode and then we compare it with the original passcode ...

This project implements a Smart Door Lock System using the ESP32, a 4x4 matrix keypad, a servo motor, and the Blynk IoT platform. It allows users to unlock the door either by entering a passcode on ...

If you hide the chat from the app switcher screen, you won’t be able to take screenshots in the app. The Telegram passcode isn’t synced to your Telegram account and it’s only for that particular ...

You are, we hope, already protecting your phone with a PIN, a fingerprint, or a face (or all three), but sometimes you'll want to add an extra barrier to particular apps—if you're lending your phone ...