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2. T9 (predictive text) - Wikipedia

   en.wikipedia.org/wiki/T9_(predictive_text)

   T9 (predictive text) Logo of T9. T9 is a predictive text technology for mobile phones (specifically those that contain a 3×4 numeric keypad), originally developed by Tegic Communications, now part of Nuance Communications. T9 stands for Text on 9 keys.[1] T9 was used on phones from Verizon, NEC, Nokia, Samsung Electronics, Siemens, Sony Mobile ...

3. Multi-tap - Wikipedia

   en.wikipedia.org/wiki/Multi-tap

   Multi-tap. An E.161 standard modern telephone keypad, as used for text messaging. Multi-tap (multi-press) [1] refers to a text entry system for mobile phones. The alphabet is printed under each key (beginning on "2") in a three-letter sequence as follows; ABC under 2 key, DEF under 3 key, etc. Exceptions are the "7" key, which adds a letter ...

4. GSM 03.38 - Wikipedia

   en.wikipedia.org/wiki/GSM_03.38

   GSM 03.38. In mobile telephony GSM 03.38 or 3GPP 23.038 is a character encoding used in GSM networks for SMS (Short Message Service), CB (Cell Broadcast) and USSD (Unstructured Supplementary Service Data). The 3GPP TS 23.038 standard (originally GSM recommendation 03.38) defines GSM 7-bit default alphabet which is mandatory for GSM handsets and ...

5. Tap code - Wikipedia

   en.wikipedia.org/wiki/Tap_code

   X. Y. Z. The tap code, sometimes called the knock code, is a way to encode text messages on a letter-by-letter basis in a very simple way. The message is transmitted using a series of tap sounds, hence its name. [1] The tap code has been commonly used by prisoners to communicate with each other. The method of communicating is usually by tapping ...

6. Cellphone surveillance - Wikipedia

   en.wikipedia.org/wiki/Cellphone_surveillance

   Cellphone surveillance. Diagram showing the operation of a StingRay device for cellphone surveillance. Cellphone surveillance (also known as cellphone spying) may involve tracking, bugging, monitoring, eavesdropping, and recording conversations and text messages on mobile phones. [1] It also encompasses the monitoring of people's movements ...

7. Pegasus (spyware) - Wikipedia

   en.wikipedia.org/wiki/Pegasus_(spyware)

   Website. www.nsogroup.com. Pegasus is a spyware developed by the Israeli cyber-arms company NSO Group that is designed to be covertly and remotely installed on mobile phones running iOS and Android. [ 1 ] While NSO Group markets Pegasus as a product for fighting crime and terrorism, governments around the world have routinely used the spyware ...

8. Telecommunications device for the deaf - Wikipedia

   en.wikipedia.org/wiki/Telecommunications_device...

   The specific GA and SK keys allow for speedier use of common abbreviations. A telecommunications device for the deaf (TDD) is a teleprinter, an electronic device for text communication over a telephone line, that is designed for use by persons with hearing or speech difficulties. Other names for the device include teletypewriter (TTY ...

9. Data Coding Scheme - Wikipedia

   en.wikipedia.org/wiki/Data_Coding_Scheme

   Data Coding Scheme is a one- octet field in Short Messages (SM) and Cell Broadcast Messages (CB) which carries a basic information how the recipient handset should process the received message. The information includes: the character set or message coding, which determines the encoding of the message user data.