Bondage, in the BDSM subculture, is the practice of consensually tying, binding, or restraining a partner for erotic, aesthetic, or somatosensory stimulation. A partner may be physically restrained in a variety of ways, including the use of rope, cuffs, bondage tape, or self-adhering bandage.
Handcuffs are restraint devices designed to secure an individual's wrists in proximity to each other. They comprise two parts, linked together by a chain, a hinge, or rigid bar. Each cuff has a rotating arm which engages with a ratchet that prevents it from being opened once closed around a person's wrist. Without the key, the handcuffs cannot be removed without specialist knowledge, and the handcuffed person cannot move their wrists more than a few centimetres or inches apart, making many tasks difficult or impossible.
The windlass is an apparatus for moving heavy weights. Typically, a windlass consists of a horizontal cylinder (barrel), which is rotated by the turn of a crank or belt. A winch is affixed to one or both ends, and a cable or rope is wound around the winch, pulling a weight attached to the opposite end. The Greek scientist Archimedes was the inventor of the windlass. The oldest depiction of a windlass for raising water can be found in the Book of Agriculture published in 1313 by the Chinese official Wang Zhen of the Yuan Dynasty.
Bondage cuffs are restraints designed for use in sexual bondage situations. Compared to conventional handcuffs, they are wide wrist and ankle restraints generally made of leather, often padded with soft leather or fake fur. Bondage cuffs may be fastened at the wrists and/or ankles by a locking mechanism, by a buckle or by velcro. They are secured around the wrist or ankle, and the cuffs may then be attached to each other or another object.
Autoerotic fatalities are accidental deaths that occur during sexual self-stimulation when an apparatus, device or prop that is being employed to enhance pleasure causes the death. Researchers only apply the term to unintentional deaths resulting from solitary sexual activity, not suicide or acts with a partner. The incidence of autoerotic fatalities in Western countries is around 0.5 per million inhabitants each year.
Bondage in BDSM is the activity of tying or restraining people using equipment such as chains, cuffs, or collars for mutual erotic pleasure. According to the Kinsey Institute, 12% of females and 22% of males respond erotically to BDSM.
Self-locking devices are pieces of rock-climbing equipment intended to arrest the fall of solo climbers who climb without partners. This device is used for rope solo climbing, for "ground-up climbing", and for "top rope solo climbing". To date, several types of self-locking devices have evolved.
The Munter hitch, also known as the Italian hitch, mezzo barcaiolo or the crossing hitch, is a simple adjustable knot, commonly used by climbers, cavers, and rescuers to control friction in a life-lining or belay system. To climbers, this hitch is also known as HMS, the abbreviation for the German term Halbmastwurfsicherung, meaning half clove hitch belay. This technique can be used with a special "pear-shaped" HMS locking carabiner, or any locking carabiner wide enough to take two turns of the rope.
Erotic asphyxiation is the intentional restriction of oxygen to the brain for the purposes of sexual arousal. The term autoerotic asphyxiation is used when the act is done by a person to themself. Colloquially, a person engaging in the activity is sometimes called a gasper. Erotic asphyxiation can lead to accidental death due to asphyxia.
Safe-cracking is the process of opening a safe without either the combination or the key.
The Bachmann hitch is a friction hitch, named after the Austrian alpinist Franz Bachmann. It is useful when the friction hitch needs to be reset quickly or often or made to be self-tending as in crevasse and self-rescue.
A body belt is any waist belt which has D-rings or other attachment points. The belts can be used as medical restraints in institutions for bed and wheelchair restraints, and for safety in activities such as abseiling or construction work. When they are used in sexual bondage plays they are commonly referred to as bondage belts, and also worn in fetish clothing. The belts are usually fastened with buckles and some by a locking mechanism, which enables quick release.
A Prusik is a friction hitch or knot used to attach a loop of cord around a rope, applied in climbing, canyoneering, mountaineering, caving, rope rescue, ziplining, and by arborists. The term Prusik is a name for both the loops of cord used to tie the hitch and the hitch itself, and the verb is "to prusik" or "prusiking". More casually, the term is used for any friction hitch or device that can grab a rope. Due to the pronunciation, the word is often misspelled Prussik, Prussick, or Prussic.
An electronic lock is a locking device which operates by means of electric current. Electric locks are sometimes stand-alone with an electronic control assembly mounted directly to the lock. Electric locks may be connected to an access control system, the advantages of which include: key control, where keys can be added and removed without re-keying the lock cylinder; fine access control, where time and place are factors; and transaction logging, where activity is recorded. Electronic locks can also be remotely monitored and controlled, both to lock and to unlock.
Lock bumping is a lock picking technique for opening a pin tumbler lock using a specially crafted bump key, rapping key or 999 key. A bump key must correspond to the target lock in order to function correctly.
A chain sinnet is a method of shortening a rope or other cable while in use or for storage. It is formed by making a series of simple crochet-like stitches in the line. It can also reduce tangling while a rope is being washed in a washing machine.
Breast torture is a BDSM activity in which sexual stimulation is provided through the intentional application of physical pain or constriction to the breasts, areolae or nipples of a submissive. It is a popular activity among the kink community. The recipient of such activities may wish to receive them as a result of masochism or they may have a desire to please a dominant who is sadistic. Those involved may also be motivated by breast fetishism. Mild breast torture such as light impact play on the breasts is also occasionally used outside of the BDSM context to provide stimulation and pleasure during conventional sex. While breast and nipple torture is usually performed on women, most techniques or methods may also be used on men.
A magnetic keyed lock or magnetic-coded lock is a locking mechanism whereby the key utilizes magnets as part of the locking and unlocking mechanism. Magnetic-coded locks encompass knob locks, cylinder locks, lever locks, and deadbolt locks as well as applications in other security devices.
A belly chain is a physical restraint worn by prisoners, consisting of a chain around the waist, to which the prisoner's hands may be chained or cuffed. Sometimes the ankles are also connected by means of longer chains.
An electromagnetic lock, magnetic lock, or maglock is a locking device that consists of an electromagnet and an armature plate.
