Code ring tone

Did this ages ago. Set up "caller groups" with only one person in each group. Give the group a custom ring tone that is Morse for the name of person in the group. That way, when the phone rings, you can tell if it is even worth fishing in the bag for the phone. Used MIDI to compose the Morse then, but would be easier now.

Not very private though. On train to London a few years back someone in seat opposite woke from a light sleep and said to me "Not answering a call from 'BOSS' then?"
 
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