The unknown messages come the most spooky and mentally suggestive when receivers are at a very fragile mental state. I set a few location triggers on IFTTT at areas on/around campus where I am more likely to be mentally weak or expose to physical risks (e.g. Maggie Morrison Hall, Schenley Bridge, Porter Hall). I then connect phone calls to the location triggers to give negative mental suggestions to the receivers that is location-specific.
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