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USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.
Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.
Also in 2019, the company started Hinge Labs to research successful matches and fine-tune the app's compatibility algorithm and other features. [19] Hinge was featured on CNET as one of the best dating sites for 2021. [20] A voice message feature was added to the app in October 2021. [21] As of 2023, Hinge had 23 million regular users. [22]
Ranges for fictitious telephone numbers are common in most [citation needed] telephone numbering plans.One of the main reasons these ranges exist is to avoid accidentally using real phone numbers in movies and television programs because of viewers frequently calling the numbers used.
Most commonly, the meaning of "DW" in text is "don't worry." (Doctor Who or Arthur fans everywhere may disagree.) This meaning applies to social media platforms such as Facebook and Instagram as well.
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Numerology is a practice that ascribes meaning to specific digits and series of digits. The last day of the year — Dec. 31, 2023 — is particularly intriguing, numerologically speaking.
Off-the-record Messaging (OTR) is a cryptographic protocol that provides encryption for instant messaging conversations. OTR uses a combination of AES symmetric-key algorithm with 128 bits key length, the Diffie–Hellman key exchange with 1536 bits group size, and the SHA-1 hash function.