It won't work as the telephone cannot transmit that loud and sudden a sound. Your hearing will pay the price-the caller (human or computer) could care less. It's a myth.
Ever since my 87 year old mother had gone through cardiac rehab several weeks ago I’ve been barraged with calls from numerous states purportedly offering a free medical alert system. I receive a minimum of 4 or 5 calls each day from the following numbers:
I have no doubt that this is a medical alert phishing scam
(see http://www.usatoday.com/story/money/personalf ... -alert/2397189/) and originates from a single source. I don’t know how these people obtained my unlisted cell phone number since the hospital’s disclosure of personal or medical information is a violation of HIPAA confidentiality, subjecting the violator to fines and penalties. Most medical care providers avoid this like the plaque.
My advice is to not answer the call and do not respond to these people in any way. Once they know your phone number is legitimate they will continue calling and may pass your number on to other scammers. It’s a PIA but I would also file a complaint with the FCC and Federal Trade Commission. The more complaints they receive the more likely they will launch an investigation.
Any scum who prey on the elderly are the lowest of bottom feeders and need to be eliminated from society.
I have been receiving calls for about a month. This people might be terrorists because they don't answer and nobody can track them to bring them to justice.