jonathan liau's List: itgs IA #3

• opting instead for the type of RFID that poses the highest risk of generating electromagnetic interference (EMI) in nearby devices

  • IT concepts
• The Purdue study showed no effect when ultrahigh-frequency (UHF) systems were kept at a reasonable distance from medical equipment. So placing readers in utility rooms, near elevators and above doors between hospital wings or departments to track assets is not a problem

  • Solution

• For example, in two such incidences, a mechanical ventilator and a syringe pump switched off when the RFID system was transmitting near them.

• "potentially hazardous incidents in medical devices."

• When a nurse or doctor takes an item out of the cabinet in an operating room, the cabinet scans a chip attached to the item's container and records who removed it and which patient it is intended for.
• If the item goes unused, it can be placed back in the cabinet and automatically rescanned.
• f the cabinet runs empty, it can tell the physician or nurse if the supplies are available in other cabinets, saving valuable time during an operation.

1 more annotation...

• Newer innovations in the RFID industry include active, semi-active, and passive RFID tags. These tags can store up to 2 kilobytes of data and are composed of a microchip, antenna, and, in the case of active and semi-passive tags, a battery. The tag's components are enclosed within plastic, silicon or sometimes glass.

    

  At a basic level, each tag works in the same way:

    
   
  • Data­ stored within an RFID tag's microchip waits to be read.
    
  • The tag's antenna receives electromagnetic energy from an RFID reader's antenna.
    
  • Using power from its internal battery or power harvested from the reader's electromagnetic field, the tag sends radio waves back to the reader.
    
  • ­The reader picks up the tag's radio waves and interprets the frequencies as meaningful data.