Half a croissant, on a plate, with a sign in front of it saying '50c'
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Elevator alarm with duplex video

For the hearing-impaired.
  (+4)
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Almost all elevators have an alarm or emergency call button.

But the system has a limitation - it's usually a voice intercom.

If the caller has a hearing impairment, they can't respond to any questions, which may result in the call being dismissed as a hoax.

The answer is a 2-way video link, so the caller can sign to the call handler, and vice-versa.

8th of 7, Nov 17 2016

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       [8th], I'm not sure those new meds are working out. You have recently posted several ideas whose purpose seems to be to reduce risk, assist those with disabilities, or help people in difficulty. I trust that normal service will be resumed shortly?
MaxwellBuchanan, Nov 17 2016
  

       PLEASE INSERT DOS DISK IN DRIVE A: AND STRIKE ANY KEY
8th of 7, Nov 17 2016
  

       Where's the "ANY" key? And what kind of strike would you prefer: air-strike, union strike, kid's trike, sun-strike, strike up the band?   

       Jokes aside, this is actually a good idea. Screens, cameras, data links are all cheap enough now to implement this.
neutrinos_shadow, Nov 17 2016
  

       Perilously close to miming..
not_morrison_rm, Nov 17 2016
  


 

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