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Released on April 23, 2013, the device was the first smartphone-connected breathalyzer available for commercial purchase. [7] The accuracy of BACtrack Mobile was independently tested and found to be comparable to law enforcement breath alcohol testers. [8] The results of one such study were published in the Journal of Injury Prevention. [8]
Public breathalyzers are becoming a method for consumers to test themselves at the source of alcohol consumption. [61] These are used in pubs, bars, restaurants, charities, weddings and all types of licensed events. As breathalyzer tests have increased risk of transmission of coronavirus, they were temporarily suspended from use in Sweden. [62]
This current is then measured and converted to an alcohol equivalent reading. Although fuel cell technology is not as accurate or reliable as infrared spectroscopy technology used in evidentiary breathalyzers, they are cheaper and tend to be more specific for alcohol. Alcohol, as defined here, includes isopropanol, sorbitol, menthol, methanol ...
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In early testing, the experimental breathalyzer design provided results with high accuracy in about a minute. It functions by collecting a breath sample and directing it towards an electrochemical biosensor coated with antibodies specific to the SARS-CoV-2 virus. If the virus is present, the sensor produces a signal, indicating a positive test.
The Breathometer was a small device that plugged into the audio jack of a smartphone, coupled with a dedicated app that reads the user's blood alcohol content (BAC). [8] [19] [20] [9] The app utilized the smartphone to provide the processing power, which allowed the device to be small enough to fit on a standard keychain.
Although the actual inventor of the hand-held metal detector is disputed, the hand-held metal detector was made in 1925 and was first patented by Dr. Gerhard Fisher in 1931. A metal detector had been invented some forty years earlier (1881) by Alexander Graham Bell for the sole purpose of locating a lead bullet in President James A. Garfield.
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.
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