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The Four Thieves Vinegar Collective is an anarchist biohacking group founded in 2015 by Michael Laufer.They have published instructions for the "EpiPencil", an epinephrine autoinjector, and the "Apothecary MicroLab", a do-it-yourself (DIY) device intended to make a variety of medications, most notably pyrimethamine (Daraprim).
A counterfeit banknote detection pen, used to detect fake banknotes. A counterfeit banknote detection pen is a pen used to apply an iodine-based ink to banknotes in an attempt to determine their authenticity. The ink reacts with starch in wood-based paper to create a black or blue mark but the paper in a real bill contains no starch, so the pen ...
A ruling pen is a drawing instrument for drawing with ink or with other drawing fluids. Originally used for technical drawings in engineering and cartography together with straight rulers and French curves , it is today used for specific uses, such as picture framing or calligraphy .
The hadith of pen and paper (Arabic: حديث القلم والورقة, romanized: hadīth al-qalam wa'l-waraqa) is an incident in which the Islamic prophet Muhammad expressed a wish to issue a written statement shortly before his death, possibly on a Thursday, but was prevented from doing so. Muhammad's intentions are debated though it is ...