Half a croissant, on a plate, with a sign in front of it saying '50c'
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Low-tech driver alcohol test

Car ignition interlock
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The ignition key must be introduced without touching a small ring surrounding the lock. The ring must communicate their vibrations to a piezoelectric device to measure the strength of the key when hitting. If the driver fails introducing the key, and depending the strength of the measured force, a timer would block the iginition system for a proportional time.
piluso, Feb 01 2013

Similar: Moving_20Ignition_2...20Driver_27s_20Cars
[piluso, Feb 01 2013]

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       Could also include a driver pronunciation test: "iginition"
normzone, Feb 01 2013
  

       Hell, it takes me a minute to find the key hole when I am sober.
Kansan101, Feb 01 2013
  

       Key is shaped a little complicatedly so a drunk person might insert it upside down and fail the test.
phundug, Feb 01 2013
  

       // Key is shaped a little complicatedly so a drunk person might insert it upside down and fail the test // Still have a chance of 50% of success absolutely drunk.
piluso, Feb 01 2013
  

       //Hell, it takes me a minute to find the key hole when I am sober.//   

       No wonder you can't keep a girlfriend. HEYY-OOO!
ytk, Feb 01 2013
  
      
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