PassGo Lock Screen Pro

Different from all other lock screen Apps on the market, "PassGo Lock Screen" is the first ever commercial software using PassGo, the most secure password scheme on the earth, to protect user critical data.

PassGo, originally designed to create cryptographic keys, was derived from Go, an accent Chinese game, which is famous with its inexhaustible variety and simple rules. PassGo offers extremely large password space, and hence provides extremely high level security. According to the result of the scientific computation, the password space of a 9x9 PassGo is 256 bits, which is astronomical and is far more than enough to protect any mission critical data.

"PassGo Lock Screen" can not only lock screen, but also can lock individual Apps, such as facebook or Gallery. The grid size is adjustable from 2x2 to 19x19, and the color/style/background can be easily customized to your own preference.

This Pro version provides following extra features:

* Ads free
* camera shortcut on lock screen
* Option to hide line and dot (to prevent shoulder surfing)
* Enable device administrator in the settings (to further improve security)
* Clear last stroke (to make it easier to draw a multi-stroke password)