It is always good to have keys. You can use them to open the right door, to free yourself from the square in-between, to open the gate to a new world full of secrets and mysteries. And in general, living with keys is much more optimistic than living without keys. 

The editors of The Global Technology magazine know all about the intricate properties of keys, so they’ve prepared six lock picks for you. Behind each key you will find a riddle that opens the door to the exciting world of encrypted messages. 

Choose your favorite key and boldly make a step towards exciting experiments, after which you will be able to open any door. Good luck!

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