Bluetooth Fact or Fiction
Like many technologies on the market today, Bluetooth experienced its share of weirdness and wrong information. Are you ready to play Bluetooth: Fact or Fiction? Let's go!
Bluetooth® technology was named after a 10th century Danish King.
Fact! The name Bluetooth comes from the 10th century Danish King Harald Blåtand or Harold Bluetooth in English. King Blåtand helped unite warring factions in parts of what are now Norway, Sweden and Denmark. Similarly, Bluetooth technology was created as an open standard to allow connectivity and collaboration between disparate products and industries.
Bluetooth was initially conceived as a replacement for RS-232 standard cables.
Fact! But its value, and huge success, came from creating a Personal Area Network (PAN) of devices, from light bulbs to headsets and everything in between.
Bluetooth was created by Hedy Lamarr, a famous actress and inventor.
Fiction (based on fact)! Hedy Lamarr developed spread spectrum and frequency hopping technology, which is incorporated in modern Bluetooth technology and essential for Adaptive Frequency Hopping, which is what makes Bluetooth a good-neighbor technology and limits interference. Read this article on Wikipedia for the whole story.
A2DP, GATT, HID and BIP are all important Bluetooth profiles.
Fact! A2DP (Advanced Audio Distribution Profile) makes streaming stereo music possible. GATT (Generic Attribute Profile) allows developers to build unique profiles specific for their applications (Bluetooth fork, anyone?). HID (Human Interface Device Profile) makes your Bluetooth enabled mice and keyboards work effortlessly. BIP (Basic Imaging Profile) allows you to send images between devices (other phones, printers, even picture frames).
Bluetooth causes headaches.
Fiction! There is no clear evidence that radio frequency (RF) waves cause any harmful health effects. Bluetooth headsets have an SAR (Specific Absorption Rate) value of around .001 watts/kg (less than 1/1000th the SAR limit for cell phones set by the FDA and FCC). You can read specific information at the World Health Organization website.