Block Caller ID on all outgoing calls
This gadget is a replacement for those $20 boxes you can buy at Radio Shack that automatically dial *67 every time you pick up the phone. Considering that you have to dedicate a voice note taker to this task and that those things cost almost as much as the $20 box mentioned above, and considering that this box doesn't work as well, and considering that in most places permanent Caller ID blocking is available and free, one has to wonder what the point would be of building this thing.
The textfile author doesn't explain how to stop the thing from annoying incoming callers with the *67 tones every time you answer.
Plausibility: Semi-workable but not economically feasible for what it does.
Obsolescence: Will last as long as *67 does.
Skill: Some electronics skills required.
Risks: None, it's legal.
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