{{Technology Infobox
| image=FileKeypad.jpg|200px
| name=Keypad
| affiliation=Resistance
| type=Electronic lock
| usedby=*Rebels
*Gordon Freeman
*Alyx Vance
*Barney Calhoun
*Judith Mossman
*Isaac Kleiner
*Arne Magnusson
| entity=
| designer=
| hidei=
| hideu=
| hideg=yes
The '''Keypad'''Its model and texture names is a device used by the Resistance to lock certain entrances, exits, gates or storages.

The device features a set of buttons with 123-keys at top and a light-green display that shows an "#" message if the entered password is correct, and an "#" message if it is not. When used by Gordon, it always displays the error message.

==Behind the scenes==
Since the entered code depends on the character's animation, the same combination is used in many places. For most of the NPCs, it is "153". For Isaac Kleiner it appears to be "222", for MIRT - "857", and for Arne Magnusson - "554".


FileKeypad BME.jpg|A Keypad near the airlock to Black Mesa East.
FileKeypad Mossman.jpg|Another Keypad being used by Judith Mossman.
FileGravity gun first stored.jpg|The Gravity Gun stored in its cupboard, protected by a Keypad, at Black Mesa East.
FileAlyx gravity gun first buttons.jpg|Alyx unlocking the cupboard.
FileSecret passage lighthouse medic.jpg|Resistance Medic standing near a Keypad that unlocks a secret passage at the Lighthouse Point.
FileKeypad Eli.jpg|Eli Vance using the Keypad that protects the entrance to White Forest's Primary Silo.
FileParticle benchmark main room.jpg|In the Source Particle Benchmark.

==List of appearances==
*''Half-Life 2'' {{1st}}
*Source Particle Benchmark {{Nc}}
*''Half-Life 2 Episode Two''


CategoryResistance technology
CategoryHalf-Life 2
CategoryHalf-Life 2 Episode Two