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  2. Automatic Packet Reporting System - Wikipedia

    en.wikipedia.org/wiki/Automatic_Packet_Reporting...

    APRS (Automatic Packet Reporting System), is a digital communications protocol for exchanging information among a large number of stations covering a large (local) area, often referred to as " IP -ers". As a multi-user data network, it is quite different from conventional packet radio. Rather than using connected data streams where stations ...

  3. Tracking number - Wikipedia

    en.wikipedia.org/wiki/Tracking_number

    Tracking numbers are useful for knowing the location of time sensitive deliveries. It is a unique ID number or code assigned to a package or parcel. The tracking number is typically printed on the shipping label as a bar code that can be scanned by anyone with a bar code reader or smartphone. In the United States, some of the carriers using ...

  4. United Parcel Service - Wikipedia

    en.wikipedia.org/wiki/United_Parcel_Service

    ups.com. Footnotes / references. [1][2][3][4][5] United Parcel Service, Inc. (UPS) is an American multinational shipping & receiving and supply chain management company founded in 1907. [1] Originally known as the American Messenger Company specializing in telegraphs, UPS has expanded to become a Fortune 500 company [6] and one of the world's ...

  5. UPS online tracking doesn't actually know where your ... - AOL

    www.aol.com/news/2010-03-17-ups-online-tracking...

    To my befuddlement, UPS's tracking log had my goods breaking the laws of physics. It showed an "arrival scan" in Newark, NJ, at 6:27 a.m. But three minutes later, at 6:30 a.m., my box was listed ...

  6. Package tracking - Wikipedia

    en.wikipedia.org/wiki/Package_tracking

    Package tracking or package logging is the process of localizing shipping containers, mail and parcel post at different points of time during sorting, warehousing, and package delivery to verify their provenance and to predict and aid delivery. Package tracking developed historically because it provided customers information about the route of ...

  7. North American railroad signals - Wikipedia

    en.wikipedia.org/wiki/North_American_railroad...

    There are two main types of signaling aspect systems found in North America, speed signaling and weak route signaling. [citation needed] Speed signaling transmits information regarding how fast the train is permitted to be going in the upcoming segment of track; weak route signaling transmits information related to the route a train will be taking through a junction, and it is incumbent upon ...

  8. Track and trace - Wikipedia

    en.wikipedia.org/wiki/Track_and_trace

    The track and trace concept can be supported by means of reckoning and reporting of the position of vehicles and containers with the property of concern, stored, for example, in a real-time database. This approach leaves the task to compose a coherent depiction of the subsequent status reports. Another approach is to report the arrival or ...

  9. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    Uninterruptible power supply. An uninterruptible power supply (UPS) or uninterruptible power source is a type of continual power system that provides automated backup electric power to a load when the input power source or mains power fails. A UPS differs from a traditional auxiliary / emergency power system or standby generator in that it will ...