It actually comes pre-programmed with a game controller script, so you can plug it into your computer and start playing as soon as you open the box (requires the free Super Tux Cart videogame).

ENGADGET: Arduino Esplora helps you learn microcontrollers without the pesky breadboard

Unless a family member has access to it (you must not only give the person a key, but must also sign a form at the bank authorizing that designee to open it), the box could be sealed when you die, and it might take court action by your heirs to get it opened.

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