- published: 18 Aug 2015
- views: 134006
Radio-frequency identification (RFID) is the use of a wireless non-contact system that uses radio-frequency electromagnetic fields to transfer data from a tag attached to an object, for the purposes of automatic identification and tracking. Some tags require no battery and are powered by the electromagnetic fields used to read them. Others use a local power source and emit radio waves (electromagnetic radiation at radio frequencies). The tag contains electronically stored information which can be read from up to several metres (yards) away. Unlike a bar code, the tag does not need to be within line of sight of the reader and may be embedded in the tracked object.
RFID tags are used in many industries. An RFID tag attached to an automobile during production can be used to track its progress through the assembly line. Pharmaceuticals can be tracked through warehouses. Livestock and pets may have tags injected, allowing positive identification of the animal. RFID identity cards can give employees access to locked areas of a building, and RF transponders mounted in automobiles can be used to bill motorists for access to toll roads or parking.
Last night, in the moments my thoughts were adrift
And coasting a terrace, approaching a rift
Through which I could spy several glimpses beneath
Of the darkness, the light from above could not reach
I spied wings of reason, herself taking flight
And upon yonder precipice saw her alight
And glared back at me one last look of dismay
As if she were the last one, she thought I'd betray
So much better I said to myself
And drawing quite close to the top of the shelf
I struggled with destiny upon the ledge
And gasped when defeated, he slipped off the edge
And silence contagious in moments like these
Consumed me and strengthened my will to appease
The passion that sparked me one terrible night
And shocked and persuaded my soul to ignite
So much better, I said to myself
And drawing quite close to the top of the shelf
I struggled with destiny upon the ledge
And gasped when defeated, he slipped off the edge
And silence contagious in moments like these
Consume me and strengthen my will to appease
The passion that sparked me one terrible night
(And shocked and persuaded my soul to ignite)
And shocked and persuaded my soul to ignite
And shocked and persuaded my soul to ignite
And shocked and persuaded my soul to ignite