The Anti Shoulder-Surfing Keypad
A watching camera or a bystander at your shoulder learns nothing from your keystrokes — because the digit layout is scrambled into a new arrangement every single time the keypad is activated. The pattern they see is never the pattern you will use next.
A new scrambled layout on every activation.
Observers watching the keys learn nothing.
A fixed keypad gives your PIN away
On an ordinary keypad the numbers never move. That single weakness is what shoulder surfing and camera-replay attacks exploit.
Someone is watching
A person behind you in the queue, or a CCTV camera above the door, has a clear line of sight to your hand as you type.
They only need the pattern
Because the digits stay in the same place, the shape your finger traces is enough. No need to read the actual numbers — the movement is the code.
The PIN is compromised
Footage can be paused, zoomed and replayed at leisure. One recording of one entry is all it takes to reproduce your access code.
Scramble the layout, break the attack
The Codeguard keypad removes the one thing an observer relies on: a layout that stays still.
Press * to activate
A single press wakes the keypad and generates a fresh, random arrangement of the digits 0–9 for this entry only.
Enter your PIN as normal
You read the numbers and press them exactly as you always would. Nothing about the routine changes for the authorised user.
The evidence is worthless
The finger pattern an observer just recorded maps to a layout that will never appear again. Replaying it reveals a different, meaningless code.
Built for places under observation
Anywhere a PIN is entered in view of cameras or the public, a scramble keypad closes a gap that a fixed keypad cannot.
Airports & transport
Restricted-area doors sit directly under dense CCTV coverage — exactly the conditions shoulder surfing thrives in.
Banks & data centres
High-value rooms where a single leaked code can compromise cash, records, or critical infrastructure.
Military & government
Facilities where access control is scrutinised and observation, both hostile and incidental, is a genuine threat.
Specify an anti shoulder-surfing keypad
The scramble keypad is available with Wiegand or RS232 output, in surface and flush-mount formats. Tell us your access-control setup and we will recommend the right model.