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A '''piggyback''' refers to a condition where one thing is done as a part of something else, in which the secondary task is carried as overhead to the primary one. This can occur in regards to a [[computer]] system piggyback.
In normal conditions, the term '''piggyback''' is used to refer to when one person rides on another on the shoulders or back of the first person.
 
   
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Data, in [[2368]], with the assistance of [[Captain]] [[K'Vada]], accessed the [[Romulan Central Information Net]] to send a transmission to the [[USS Enterprise (NCC-1701-D)|USS ''Enterprise'']], piggybacking it on Romulan transmissions. ({{TNG|Unification II}})
In other contexts, it usually refers to a condition where one thing is done as a part of something else, in which the secondary task is carried as overhead to the primary one.
 
 
In one example, a person uses an access card to enter a secured facility, such as a computer center. Another person, who also has an access card, is going to the same place. Rather than have the first person use their card, enter the facility, close the door, then have the second person do the same thing, usually the first person will simply use their card and enter, and the second person will also enter with them, thus they will "ride piggyback" on the first person's access. Note that because this practice can defeat security, in some areas it is prohibited.
 
 
In the case of a radio signal, it may be possible to add a second signal (or some information) on top of the first signal in such a way that the second signal is otherwise unnoticeable, and thus the second signal is said to "ride piggyback" on the first signal. This exact usage occurs as a result of sending a signal in the second act of the episiode [[Unification II]].
 

Revision as of 02:09, 3 April 2007

A piggyback refers to a condition where one thing is done as a part of something else, in which the secondary task is carried as overhead to the primary one. This can occur in regards to a computer system piggyback.

Data, in 2368, with the assistance of Captain K'Vada, accessed the Romulan Central Information Net to send a transmission to the USS Enterprise, piggybacking it on Romulan transmissions. (TNG: "Unification II")