When a firefighter gets injured and hasn’t moved for a set amount of time, this PASS device will emit an audible alarm of at least 95db. The purpose of this is to notify other firefighters in the vicinity to rescue the injured firefighter. youtu.be/zwzHtuyTZ_c
Japan has an early warning system for earthquakes that notifies you on your smartphone and radio seconds before it happens. youtu.be/YTyvBA02nYk
When Buddy Holly was killed in a plane crash, his pregnant wife heard the news on television and suffered a miscarriage as a result. Since then, it became policy to notify family of tragedy before names became public. content.time.com/time/art…
When returning home to Australia, Hugh Jackman has been known to notify the paparazzi as to his whereabouts so they can get the photos they want and leave him alone the remainder of his stay. youtube.com/watch?v=8LNOP…
Today I learned about the Loomis Fargo robbery, the second largest cash robbery in US history, in which the conspirators were caught largely due to their extravagant spending afterwards and because one asked a bank teller how much money she could deposit before the bank had to notify the federal government. en.wikipedia.org/wiki/Oct…
The United States Air Force Pararescue (PJs) use the sound bite of "Leeroy Jenkins" from World of Warcraft to notify themselves of an upcoming medevac mission. en.wikipedia.org/wiki/Lee…
Today I learned about debt "parking", where debt collectors can affect your credit score without having to ever notify you that you owe money. This most often happens with small medical bills. (page 11 on the pdf/ labeled page 8) nclc.org/images/pdf/pr-re…
Mere hours after JFK's assassination, a Secret Service agent almost accidentally shot Lyndon B Johnson because LBJ didn't notify Secret Service before stepping outside of his mansion. nydailynews.com/news/nati…
Paralympic medals have steel balls inside them which, when shaken, makes a rattling sound that helps notify visually impaired athletes to determine between medals. edition.cnn.com/2016/09/1…
During the 1912 Olympics, one of the Japanese athletes didn't notify race officials during a marathon, and technically didn't finish. He later completed it when notified of this in 1967, making his time at 54 y, 8 m, 6 d, 8:32:20.3. en.wikipedia.org/wiki/Jap…
Uber drivers will occasionally notify the police when they drop off/observe lots of (US) teens with alcohol going into a party businessinsider.com/uber-…
California's "safe surrender" law allows one parent to anonymously leave a baby at a hospital for adoption - and makes it illegal for the hospital to notify the other parent. sacramento.cbslocal.com/2…
In the UK the gov't funds a service which you can notify about a person sleeping rough during winter, and they will find that person and arrange a bed for the night. streetlink.org.uk/about
U.S troops that were deployed on D-Day were issued gas detection brassards to notify them if they were in the presence of a gas attack by turning red. However by the time they noticed it would already be too late. skylighters.org/encyclope…
In September 2007, Wackenhut Corporation employee Kerry Beal videotaped fellow security guards at the Peach Bottom Nuclear Generating Station sleeping while on duty. Beal had previously tried to notify supervisors at Wackenhut and the US Nuclear Regulatory Commission. He was later fired. en.wikipedia.org/wiki/G4S…
Washington, D.C. uses a series of acoustic sensors called "ShotSpotter" to detect gunfire. When "ShotSpotter" sensors detect a loud noise, a central computer program analyzes the acoustic signature, pinpoints the suspected location to within a few yards and notifies police. washingtonpost.com/invest…
Today I learned about the Andon cord, a Toyota manufacturing notification system that allows for an employee to notify all teams involved of a defect in production, sometimes even stopping production until the problem is fixed. en.wikipedia.org/wiki/And…
Today I learned of a Silver Alert, a public notification system to notify citizens of missing persons over 65 years old with mental disabilities. It’s an alternative to Amber Alerts, and is only used in 27 of the 50 states in the USA wikipedia.org/wiki/Silver…
In December 2002 a 60-year-old mechanic was fined for failing to notify the Driver and Vehicle Licensing Agency that he’d removed his motorcycle from the road. He refused to pay and claimed that he had the right by medieval law to choose a trial by combat with a "champion" nominated by the DVLA en.wikipedia.org/wiki/Tri…
Today I learned about "reverse 911", a system currently owned by Motorola that notifies people of an emergency by accessing user data from major mobile phone companies. en.wikipedia.org/wiki/Eme…
During the Rwandan Genocide, a Hutu Catholic priest lured Tutsis into his church with the promise of refuge, only to notify Hutu militia, allowing them to bulldoze the church and slaughter anyone who survived en.wikipedia.org/wiki/Rwa…
Today I learned of the D-Notice. The UK government notifies newspapers and TV/radio stations that a certain topic should not be publicly discussed because of national security. D-Notices are voluntary, but media generally cooperate. en.wikipedia.org/wiki/DSM…
Seizure-alert dogs are a thing, and can sense and notify their human companions of an oncoming seizure epilepsy.com/get-help/sta…
There is a smoke detector for the deaf and blind that sprays allyl isothiocyanate, the chemical that gives horseradish and wasabi their pungency, to notify them of the hazard. blogs.scientificamerican.…
Speed limits are enforced by aircraft by having a spotter police officer in the sky who notifies a ground officer of drivers exceeding the speed limit. mentalfloss.com/article/5…
During whaling times, a pod of orcas in Southern Australia would notify whalers of the presence of baleen whales, and assist in the kill in return for the lips and tongue. australiangeographic.com.…
There is a cup being developed to detect date-rape drugs and notify the user. cnn.com/2013/08/14/us/dat…
There's a national pet amber alert where you can notify neighbors within a certain radius and include photos as a reference. petamberalert.com/
Chuck Berry's "Johnny B. Goode" is one of the songs selected by Carl Sagan to be on NASA's Voyager Golden Record. For Berry's 60th birthday, Sagan wrote him a letter to notify him of this. loc.gov/item/cosmos000081
The blue lights on traffic signal are used to notify law enforcement when a light is red if they're unable to see the actual light. nbc-2.com/story/22768557/…
American men between the ages of 18 and 25 must notify Selective Service of any address changes within 10 days. sss.gov/RegVer/wfAddressC…
The very first Google doodle was designed by Larry Page and Sergey Brin to notify users of their absence wile they were at Burning Man en.wikipedia.org/wiki/Goo…
Garbage trucks in Taiwan play music to notify citizens of their arrival and to bring the garbage out for collection. The trucks play either Beethoven's "FΓΌr Elise" or Tekla Badarzewska's "A Maiden's Prayer". mnn.com/lifestyle/recycli…
Facebook hides some of the messages sent to you in the 'other' tab and does not notify you slate.com/articles/techno…
Auld Lang Syne poem used for New Year celebrations is used in Japanese shops to notify customers the shop is closing soon en.wikipedia.org/wiki/Aul…
The first Google Doodle was in honor of the Burning Man Festival of 1998, and was designed by Larry Page and Sergey Brin to notify users of their absence in case the servers crashed. en.m.wikipedia.org/wiki/G…
G.I. Joe was originally a military pigeon credited with saving approximately 1,000 British troops during WWII by flying 20 miles in 20 minutes to notify Americans not to bomb Colvi Vecchia, Italy. If he had arrived only a few minutes later, the British troops there would not have survived. fbipigeons.com/G.I.JOE.ht…
NORAD's Santa Tracker started after a newspaper typo caused a child looking for Santa, to mistakenly call a secret, military hotline intended to notify of a Cold War attack on the US by the Russians. govbooktalk.gpo.gov/tag/c…
"one party consent" states allow people to record phone calls they make/receive without having to notify the other person that they are being recorded [38 states] aapsonline.org/judicial/t…
If you type "I have attached" in an e-mail on GMail, but didn't actually attach the file they will notify you and ask if you meant to attach something

GMail is now my favorite.

Justintv has an emergency system setup in all chatrooms by typing /emergency to notify an admin of immediate threats to someone's life or safety. justin.tv/p/emergencies
The International Space station is the third brightest object in the sky behind the sun and the moon, and NASA offers a service which notifies you when it's trafficking near your location. spotthestation.nasa.gov/
In the United States if you record a cover of a song, notify the copyright holder and pay them royalties, they are required to give you a license to sell the song commercially en.wikipedia.org/wiki/Com…

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