In order to password-protect a USB (pen) drive using a mobile device, you can use specific mobile apps and OTG adapters if needed. Here’s a straightforward guide:
1. Use File Encryption Apps on Android:
Some Android apps can encrypt files on external drives. Solid Explorer and Andrognito are popular options.
- Connect your USB drive using an OTG (On-The-Go) adapter.
- Open Solid Explorer (available on the Google Play Store).
- Locate and select files on the USB drive you want to protect.
- Use the app's Encrypt function, and set a password.
- The selected files will be encrypted and require a password to access.
2. Use a Dedicated USB Security App:
Apps like USB Lockit work specifically for USB drives and allow password protection.
- Connect your USB drive using an OTG adapter.
- Open USB Lockit (available on Google Play Store).
- Set up the app to lock your USB drive with a PIN or password.
- After setup, your USB will be password-protected, and unlocking it requires the same app and password.