Safe from Professional Robbery
- Patented mechanical door lock (No battery needed)
- Door Opening by plastic key (punched card key) only.
(Even locksmith can not open doors without the key)
- N of holes are randomly pierced on a card and used as a key.
- Lock or unlcok door lock by recognizing the depth and pierced hole or not pierced hole.
- High security lock (the rate of same key : 1 / 1,000,000)
- Easy to carry a key as it is tiny plastic card.
- Simple and easy to install
- Developed by a professional cryptologist worked for the Korean ministry of National Defense.
- General mechanical door lock is easily opened by thief or locksmiths but not for Safecombo.