• Radio band of 2.4-2.4836 GHz
  • Hops between frequencies within band to reduce interference
  • Requires close proximity to form connection
    • Distance requirements depend on class of device
  • Two devices must pair in order to connect
  • Susceptible to various security exploits
    • Bluejacking
      • Connection used to send unsolicited data
    • Bluesnarfing
      • Connection used to download data with permission

Power Classes

Class Maximum power output Typical range Purpose
1 100 mW Up to 100 m Used for industrial purposes
2 2.5 mW Up to 10 m Used for mobile devices
3 1 mW Up to 1 m Rarely used

Wireless Networking Networking Computer Science