Piano Guidance
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Do master keys exist?

Legitimate skeleton or master keys are used in many modern contexts where lock operation is required and the original key has been lost or is not available. In hotels without electronic locks, skeleton keys are used by housekeeping services to enter the rooms.

en.wikipedia.org - Skeleton key - Wikipedia
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Key able to unlock multiple locks

padlock skeleton key with all of the teeth filed down (right) and a normal key (left) for the same lock. The normal key on the left will open only the lock that it goes to, but the skeleton key on the right will open any lock with this particular keyhole.

Two warded lock keys and a homemade skeleton key.

A skeleton key (also known as a passkey[1]) is a type of master key in which the serrated edge has been removed in such a way that it can open numerous locks,[2] most commonly the warded lock. The term derives from the fact that the key has been reduced to its essential parts.[2] The term is also used synonymously with master key to refer to any key, keycard or other device capable of opening a variety of locks.[citation needed]

Master keys [ edit ]

A common set of skeleton keys used to open most types of warded padlocks A skeleton key is a key that has been filed or cut to create one that can be used to unlock a variety of warded locks each with a different configuration of wards. This can usually be done by removing most of the center of the key, allowing it to pass by the wards without interference, operating the lock. To counteract the illicit creation of such keys, locksmiths can put wards not just in the center but on the outside as well, making the creation of a skeleton key more difficult. Lever lock skeleton keys are used in a lock with usually three or five levers and a set of wards that come into contact with the bit of the key only on the sides—the top is for pushing the levers to their correct heights while the warded section of the key just has to pass uninterrupted to allow the key to rotate fully. A master key system of lever locks has the same lever heights in all locks. Each door will have different wards and can only be opened by the correctly warded key or the master key. A skeleton key has the warded section of the key removed so that it opens all the doors of a system. Some applications, such as a building with multiple entrance doors, have numerous locks that are keyed alike; one key will open every door. A keyed-alike system is different from a master key system as none of the locks have a key that can open only that lock. Skeleton keys have often been associated with attempts to defeat locks for illicit purposes, to release handcuffs for example, and standard keys have been filed down for that purpose. Legitimate skeleton or master keys are used in many modern contexts where lock operation is required and the original key has been lost or is not available. In hotels without electronic locks, skeleton keys are used by housekeeping services to enter the rooms.

See also [ edit ]

References [ edit ]

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Is Yamaha PSR I400 good for beginners?

The PSR-I400's auto accompaniment “Styles” function is invaluable for beginners and more experienced players alike. As you play chords, compatible basslines, rhythm tracks, and other kinds of accompaniment are automatically created and follow along with your performance.

in.yamaha.com - PSR-I400 - Overview - Portable Keyboards - Yamaha Music India

The PSR-I400 makes learning to play the keyboard quick and enjoyable, and will continue to be a partner for your musical endeavors for many years. Downloading Song Book gives you instant access up to 115 Songs stored in your onboard library, as well as an invaluable instructional tool that make learning lessons prepared by your teachers easy and fun. With the PSR-I400, you can learn the rhythm and timing first, and then learn the left and right hand parts separately. You can also visit Yamaha MusicSoft online to access more of your favourite Songs and accelerate your progress as a keyboard player. The PSR-I400 even offers a metronome feature for teaching timing and rhythm, as well as a recording function that tracks your mistakes and sharpens up your playing quickly and consistently. *Scores for some of the onboard songs may not be provided in Song Book for copyright reasons. *The map has been kept just for graphical representation to provide easy user navigation and it’s not presenting or associated with any political boundaries of countries.

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