The first computer was invented by Charles Babbage in 1838. He developed a mechanical calculator that had a simple storage mechanism and called it the Difference Engine. The device used punch cards to input instructions to the device steam engine as its source of power.
Its a cool app to hide anything u want...so that no one can see ur personal images videos contacts anything...must have app...As I can hide the images, videos and then etc etc in this app since instead of installing separate apps for the same...
Loved it! It locks my apps and takes a pic of anyone who tries to get in my tablet! Good protection. Directly hide any photos, no need to move memory card to phone memory. Love it. Highly recommended.