DL4 FE Encrypted External Hard Drive - v1.49/6.5.0 - User Guide
Getting Started
Tap with precision to input data
The DL4 allows you to navigate its durable screen very accurately using a pointy, non-puncturing
object of any material as a stylus. You can use the tip of your finger, a retracted ballpoint pen, or
even the edge of a plastic card, making input available and stable in any situation. The screen
uses a resistive technology that takes input from precise mechanical presses/taps. In the pass-
word entry, a touch indicator marks where the device has detected the tap. For the input to be
successful, most of the indicator needs to appear over the expected target character.
Tap instead of softly touching - different than a smartphone
Note that entry on a DL4 is different from your smartphone touch screen that uses the presence of
conductivity such as the moisture of your finger or a capacitive stylus to take input.
As an instruction, an animation displays during startup. You can skip the animation by tapping
anywhere on the screen.
Randomized key placements
The input keys of the password entry screen are randomized on each use. The randomization will
leave the row of letters in order, but the different rows will shift positions. The randomization is to
guard against smudge attacks, where an attacker analyses the fingerprint patterns on the device.
It also helps against sneak peek attacks if someone would get a glance at the password entry.
Best Practices
• The DL4 is IP64-rated but must be completely dry before connecting to a computer.
• Only connect the DL4 to certified USB ports. The DL4 has a minimum power requirement of 5
Volts and 1A of current drawn from the USB port.
• Safely eject the DL4 from the operating system before removing it. For more information, see
© 2021 DataLocker Inc. All rights reserved.
5
