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An original Kubotan keychain with keys attached. A Kubotan is a self-defense keychain weapon developed by Sōke Takayuki Kubota in the late 1960s. It is typically no more than 140 millimetres (5 + 1 ⁄ 2 inches) long and about 13 mm (1 ⁄ 2 in) in diameter, slightly thicker or the same size as a marker pen.
Key pattern is the generic term for an interlocking geometric motif made from straight lines or bars that intersect to form rectilinear spiral shapes. [ 1 ] [ 2 ] [ 3 ] According to Allen and Anderson, the negative space between the lines or bars of a key pattern “resemb[es] the L- or T-shaped slots in an ordinary key to allow it to pass the ...
OpenKeychain is a free and open-source mobile app for the Android operating system that provides strong, user-based encryption which is compatible with the OpenPGP standard. This allows users to encrypt, decrypt, sign, and verify signatures for text, emails, and files. The app allows the user to store the public keys of other users with whom ...
A keychain (/ ˈ k i t ʃ eɪ n / ⓘ) (also keyring) is a small ring or chain of metal to which several keys, or fobs can be attached. The terms keyring & keychain are often used interchangeably to mean both the individual ring, or a combined unit of a ring and fob.
The meaning behind an awareness ribbon depends on its colors and pattern. Since many advocacy groups have adopted ribbons as symbols of support or awareness, ribbons, particularly those of a single color, some colors may refer to more than one cause. Some causes may be represented by more than one ribbon.
Radioluminescent keychains. Tritium lighting is made using glass tubes with a phosphor layer in them and tritium gas inside the tube. Such a tube is known as a "gaseous tritium light source" (GTLS), or beta light (since the tritium undergoes beta decay), or tritium lamp.
The term padlock is from the late fifteenth century. The prefix pad- is thought to be related to the Latin ped which may refer to the portability of a padlock; it is combined with the noun lock, from Old English loc, related to German loch, "hole".
Śaṅkha Auspicious symbol – conch Rewalsar. The right-turning white conch shell (Sanskrit: śaṅkha; Tibetan: དུང་དཀར་གཡས་འཁྱིལ་, THL: dungkar yénkhyil) represents the beautiful, deep, melodious, interpenetrating and pervasive sound of the dharma, which awakens disciples from the deep slumber of ignorance and urges them to accomplish their own welfare ...