OTP

Technology

• One-time programmable, a type of programmable read-only memory (PROM) in electronics
• One-time pad in cryptography
• One-time password, an authentication mechanism, usually in computer security
• Open Telecom Platform, standard open-source libraries and tools for the Erlang programming language
• Opposite Track Path - Term used in optical DVD technology, allowing fast switching from layer 0 to layer 1
• ortho-Terphenyl, a hydrocarbon molecule in chemistry

Organizations and places

• Outdoor Therapeutic Program: see articles on wilderness therapy and adventure therapy
• OTP Bank, Országos Takarékpénztár és Kereskedelmi Bank Nyrt. (National Savings Bank), the biggest commercial bank in Hungary
• OTP, the IATA airport code for Henri Coandă International Airport in Bucharest
• Office of Telecommunications Policy in United States White House, between 1970-1978

Other

• Opioid treatment program
• On-time performance, a quality measurement of mass transport
• One True Pairing (Often used by fans of anime, manga, etc.)
• Off the plan, a method of purchasing or investing in a property before construction has started
• Outside the Perimeter, a term used by residents of metro Atlanta to refer to the suburbs surrounding I-285

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