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Stores, hospitals, and other places where the public are present in large numbers, uses secret codes to pass information between store employees without alarming the non-staff members and common people.
Here's the list of Top 6 Secret Codes
PICNIC / ID-10T
In computer maintenance and support, a variety of codes are used when referring to a customer. PEBKAC ("Problem Exists Between Keyboard And Chair" and PICNIC ("Problem In Chair Not In Computer") or ID-10T error ("Idiot error") are also used as slang in technical circles with similar potentially derogatory meaning.This usage implies a lack of computer savvy, asserting that problems arisen when using a device are the fault of the user. “The fault was a PICNIC” (problem in chair – not in computer), or “ID 10 T Error” – ID 10 T is, of course, IDIOT. Keep your ears open when a serviceman is fixing your computer.
Hospital Emergency Codes are used in hospitals worldwide to alert staff to various emergency situations. The use of codes is intended to convey essential information quickly and with a minimum of misunderstanding to staff, while preventing stress or panic among visitors to the hospital. "Code Blue" is generally used to indicate a patient requiring resuscitation or otherwise in need of immediate medical attention. Code Red is usually used for fire Alert.
- Mr. Mob means man overboard. Man overboard can also be signaled with three prolonged blasts on the ship's whistle and general alarm bell.
- Assemble at Muster Stations or Abandon Ship, seven or more short blasts on the ship's whistle and general alarm, followed by one long blast
- Fire and emergency, continuous ringing of the general alarm bell for ten seconds and a continuous sounding of the ship's whistle for ten seconds
- Bravo, Bravo, Bravo, used by many cruise lines to alert crew to a fire or other serious incident on board without alarming passengers.
- Echo, Echo, Echo, is the code for a possible collision with another ship.
Code Bravo is the code used for general security alert at airports. This code is meant to cause alarm - when this alert is raised, all of the security agents will begin to yell “Code Bravo” in order to frighten the passengers so that it it easier for the agents to locate the source of the problem without interference from the public.
Inspector Sands is a code phrase used by public transport authorities in the United Kingdom, including London Underground, to alert staff and police, to an emergency or potential emergency such as a fire or bomb scare without alerting the public and creating panic. The exact wording depends on the station, and the nature of the incident, for example "Would Inspector Sands please report to the operations room immediately" or "would Inspector Sands please report to platform 2".
Walmart uses a large number of code phrases. A code 300 calls for security. Code red means there is a fire in the building – get the hell out if you hear this. Worse still, a code blue means there is a bomb in the building. A Code green means there is a hostage situation and a Code white means there is an accident. The one that's heard the most is Code c which is simply a call for customer service. Code Adam is used for a "missing child".