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| Re: MVM credit card difficulties (1394215) | |||
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Re: MVM credit card difficulties |
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Posted by pragmatist on Sun May 1 22:36:08 2016, in response to Re: MVM credit card difficulties, posted by Spider-Pig on Sun May 1 21:15:29 2016. They can be either way depending on what you are trying top accomplishRadio-frequency identification Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. The tags contain electronically stored information. Passive tags collect energy from a nearby RFID reader's interrogating radio waves. Active tags have a local power source such as a battery and may operate at hundreds of meters from the RFID reader. |
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