Concealed carry, or carrying a concealed weapon (CCW), is the practice of carrying a weapon (usually a sidearm such as a handgun), either in proximity to or on one's person or in public places in a manner that hides or conceals the weapon's presence from surrounding observers. In the United States, the opposite of concealed carry is called open carry. While most law enforcement officers carry their handguns in a visible holster, some officers such as plainclothes detectives or undercover agents carry weapons in concealed holsters. In some countries and jurisdictions, civilians are legally required to obtain a concealed carry permit in order to possess and carry a firearm. In others, a CCW permit is only required if the firearm is not visible to the eye, such as carrying the weapon in one's purse, bag, trunk, etc. Overview of gun laws by nation#Comparison Gun laws in Brazil Concealed carry in Brazil is generally illegal, with special carry permits granted to police officers allowing them to carry firearms off duty, and in other rare cases. In May 2019, President Jair Bolsonaro signed a decree allowing several people to have license to carry a weapon based on the intrinsic risk of the profession, including lawyers, reporters and politicians. Firearms regulation in Canada The practice of CCW is generally prohibited in Canada. Section 90 of the Criminal Code prohibits carrying a concealed weapon unless authorized for a lawful occupational purpose under the Firearms Act. Section 20 of the Firearms Act, 1995 allows issuance of an Authorization to Carry (ATC) in limited circumstances. Concealment of the firearm is permitted only if it is specifically stipulated in the conditions of the ATC, as section 58(1) of the Firearms Act, 1995 allows a CFO to attach conditions to an ATC. Provincial chief firearm officers (CFOs) may only issue an authorization in accordance with the regulations. Specifically, SOR 98-207 section 2 requires, for an ATC for protection of life, for an individual to be in imminent danger and for police protection to be insufficient.