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Inside the Hidden World of Elevator Phone Phreaking | WIRED
"THE FIRST TIME I called into an elevator, I picked up my iPhone and dialed the number—labeled on my list as the Crown Plaza Hotel in Chicago—and immediately heard two beeps, then a recording of a woman's voice, who told me to press one to talk. When I did, I was suddenly in aural space filled with the hum of motors and the muffled twanging of steel cables under tension. "Hello, can anyone hear me?" I asked the void. The void did not respond.

I hung up and tried another number on my list: A Hilton hotel in Grand Rapids, Michigan. After just one ring I heard a series of four tones and was immediately listening to the inside of another elevator. I heard a chime, perhaps a signal that it had reached a floor, followed by the rumble of what might have been a door opening. "Hi, is anyone in here?" I asked. This time I heard a few muffled voices, then a woman answered: "There are people in here, yes."

Sounding a little more excited than I intended, I asked if anyone was in an emergency situation, a strange question I felt compelled to lead with, to make sure I wasn't tying up the elevator's phone line when the occupants might need it. I got no answer except what sounded like the rumble of the door opening and closing again.

So I stayed on the line. A few seconds later, the elevator chimed, and I heard the noises of new people entering. I greeted them as I had the first passengers, but they didn't seem to hear me even after several attempts. "Turn it over," I heard a woman's voice say in a Midwestern accent. "The lady at the desk just said to hold it," a man said. I realized I was listening to a couple trying to figure out how to use their keycard to unlock the button for their floor of the hotel. I felt a transgressive excitement, a sense that I was eavesdropping on a conversation I shouldn't be hearing, and I instinctively hung up the phone.

This was my introduction to the illicit thrill of elevator phone phreaking. (..)

Since then, Caruana has learned the tricks to identify those secret elevator phone numbers, some of which have been used by phreakers for at least 20 years: Call sequential numbers left out of a building's directory to guess the ones that might be elevators. Open an elevator phone cabinet, attach alligator clips to the phone line, connect your own phone, and call 1-800-444-4444, which reads your number back to you. Or simply ride in the elevator, hit the button, and impersonate an elevator technician who needs to know the line's number."
elevator  security  phone  phreaking  building  defcon 
8 days ago by gohai
What is the History of Dumbwaiters?
The history of dumbwaiters is a unique one worth knowing for anyone who uses lifts in their home. Here are a few critical points of the history of dumbwaiters in homes.
dumbwaiters  lifts  elevator 
10 days ago by Adventure_Web
Olds Elevator - Vertical Conveyor Technology: new Solutions in Material Handling
So this is the inverse of an achimedes screw, where the auger/screw is stationary, and the casing is turned, which makes some things easier mechanically
inverse  achimedes  screw  lift  elevator  auger 
8 weeks ago by asteroza
Benefits of a Dumbwaiter
Anyone who decides to use a dumbwaiter quickly realizes that it has many benefits. It saves times, decreases physical strain, and it's a low-maintenance device to have in your place of business or residence.
dumbwaiter  objects  elevator 
10 weeks ago by Adventure_Web
Three Indicators That You Need A Residential Elevator
A home elevator adds convenience for you, your loved ones, or any guests visiting your home. It even makes your home more valuable if you plan on selling it sometime in the future.
Preferred-Elevators  residential-elevator  elevator 
april 2019 by Adventure_Web
3 Interesting Facts That You May Not Have Known About the Elevator
The modern elevator has completely changed the way that we live our lives. Without the evolution of the elevator, life would be much harder.
residential-elevator  commercial-elevator  elevator 
april 2019 by Adventure_Web
Three Commercial Elevator Ethical Rules You Should Follow
Whenever you leave your house and step out into the world, there is always a set of rules that you must follow. There are appropriate things that you shouldn’t do at the workplace, restaurant etiquette, and many other unspoken regulations for how to process your day-to-day occurrences; but did you know that there are rules for riding an elevator as well?
elevator  commercial-elevator 
april 2019 by Adventure_Web
What to Do if You Get Stuck in an Elevator
The possibility of getting stuck in an elevator is scary. While this is a rare occurrence, it can happen. Do you think that you would know what to do?
elevator  maintenance  repair 
march 2019 by Adventure_Web
Three Simple Steps to Customize Your Residential Elevator
When it comes to a home makeover, the idea of a residential elevator may not initially come to mind. A residential elevator may seem to be a product that only wealthy people can afford but now it has become a home accessory that is accessible to more people than before.
residential-elevator  elevator 
february 2019 by Adventure_Web
Platform, Step & Mobility Lifts for Domestic & Public Access Use | Terry Lifts
Complete lift solutions for domestic/public access applications inc. platform lifts, step lifts, home elevators and goods lifts. FREE Surveys, Call Today!
home  domestic  platform  elevator  lift 
january 2019 by gilberto5757
Windy schodowe, krzesełka, platforma przyschodowa - SCHODOWA WINDA
Oferujemy platformy dla niepełnosprawnych, krzesełka schodowe, windy schodowe, platformy przychodowe. Zapraszamy do zapoznania się z ofertą!
home  domestic  elevator  platform 
january 2019 by gilberto5757

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