Secret / Door Handle

A door handle to open a door is exposed outside due to its formal element and it makes you to open it psychologically. This mentality may lead to a crime.
Secret is a secretive door handle which unrelated people cannot see.
When the door is closed, Secret is hidden inside it. When you scan your fingerprint, the security is lifted. Through a lock-shaped LED, you can check if the security is lifted. And A hidden handle of Secret protrudes, you can open the door to enter by turning a Secret's handle.
Secret is a door handle only for you.