Here is a weird concept that turn our iPhone into an old school blackboard again! Well, I dislike the chalk dust, but it does remain me of the old time when I was punished to write on the blackboard: “I will never do anything weird to my friends again” 100 times. LOL.
[KALOMIX via LikeCool and GeekyGadgets]
(you can also click the link above to find more details)
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