Let me crack the code

On Postcrossing profile, I said :
'If you believe you cannot express your exact feeling or thought in English, maybe you should use your own language, I will try to crack the code or just ask my friends to solve it;)'

And finally I received that kind of message today! Yey! And I cracked, then how? I just used a modern convenience in my hand! If it would not be an illegible scrawl, it seems you can make it turned in your favorite language!

OMG!

I shouldn't have said 'crack the code', there is NO security here! Paradoxically, poor handwriting might save our security!?