a "key" who tel at the Arduino what to do

Hello,

Is it possible to write a script on a sort of "key" or mini disk that would be inserted into a reader connected to the Arduino and who tel at the Arduino what to do? If yes can you indicate me tutorials and products please :confused:

Is it possible to write a script on a sort of "key" or mini disk that would be inserted into a reader connected to the Arduino and who tel at the Arduino what to do?

Yes, it is.

If yes can you indicate me tutorials and products please

Have a look at Bitlash.

Yes you can put data on SD/Flash drive, and read it on Arduino. Itโ€™s very common to do this so that you donโ€™t eat up the flash memory on the Arduino. My robot project that has a LCD with apps. I put as much of the code and pics on the SD card. Then the Arduino just has to read it and do certain things with that data.