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  2. Short-range device - Wikipedia

    en.wikipedia.org/wiki/Short-range_device

    Applications for short-range wireless devices include power meters and other remote instrumentation, RFID applications, radio-controlled models, fire, security and social alarms, vehicle radars, wireless microphones and earphones, traffic signs and signals (including control signals), remote garage door openers and car keys, barcode readers ...

  3. SMS - Wikipedia

    en.wikipedia.org/wiki/SMS

    Short Message Service, commonly abbreviated as SMS, is a text messaging service component of most telephone, Internet and mobile device systems. It uses standardized communication protocols that let mobile phones exchange short text messages, typically transmitted over cellular networks .

  4. Telegraphy - Wikipedia

    en.wikipedia.org/wiki/Telegraphy

    Lines of signalling relay stations can send messages to any required distance, but all these systems are limited to one extent or another in the range of messages that they can send. A system like flag semaphore , with an alphabetic code, can certainly send any given message, but the system is designed for short-range communication between two ...

  5. Text messaging - Wikipedia

    en.wikipedia.org/wiki/Text_messaging

    An alternative to inbound SMS is based on long numbers (international mobile number format, e.g., +44 7624 805000, or geographic numbers that can handle voice and SMS, e.g., 01133203040 [44]), which can be used in place of short codes or premium-rated short messages for SMS reception in several applications, such as TV voting, [47] product ...

  6. Telephone Consumer Protection Act of 1991 - Wikipedia

    en.wikipedia.org/wiki/Telephone_Consumer...

    Judge Claudia Wilken ruled that the SMS text messages are not covered by the TCPA, first, because the manner in which the SMS messages were sent does not fit the statutory definition of an "automatic telephone dialing system," and second, because the plaintiff had agreed to receive promotional messages under a broadly worded consent provision ...

  7. Two-way communication - Wikipedia

    en.wikipedia.org/wiki/Two-way_communication

    It is meant for short-range communication using devices that mimic walkie-talkies. [6] Family Radio Service (FRS) is also meant for short-range communication using devices that mimic walkie-talkies. Like the CB radio, the FRS does not require a license and can be used by anyone who is not a member of a foreign government.

  8. Short code - Wikipedia

    en.wikipedia.org/wiki/Short_code

    Short codes, or short numbers, are short digit-sequences—significantly shorter than telephone numbers—that are used to address messages in the Multimedia Messaging System (MMS) and short message service (SMS) systems of mobile network operators. [1] In addition to messaging, they may be used in abbreviated dialing.

  9. Short-range agent communications - Wikipedia

    en.wikipedia.org/wiki/Short-range_agent...

    Another SRAC device's nomenclature was RT-519, which operated in the VHF spectrum. Former British intelligence officer Richard Tomlinson mentioned SRAC devices of a cigarette pack size in his book The Big Breach: From Top Secret To Maximum Security. The text of a message was first typed on a computer and then uploaded into the SRAC device.