Who is Bluetooth named after?

Harald Bluetooth, a Danish king

What did Harald Bluetooth famously do?

Unite Danish tribes into one kingdom

What does the Bluetooth logo combine?

Two runes for Harald's initials

What is the Bluetooth SIG?

The group that manages the standard

How does Bluetooth reduce interference?

By rapidly hopping between frequencies

What is Bluetooth Low Energy designed for?

Small devices that need long battery life

Linking two devices so they trust each other

Bluetooth Quiz: Harald Bluetooth and the Wireless Logo

A Viking ruler who united Danish tribes gave his nickname to a wireless standard meant to unite devices, and this Bluetooth quiz explains the story. Play 10 interactive questions on Harald Bluetooth, the runic logo, Jim Kardach, Ericsson's Jaap Haartsen, the Bluetooth SIG, the 2.4 GHz band, frequency hopping, the first headset, Bluetooth Low Energy and pairing.

Start Bluetooth Quiz

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

King
Who is Bluetooth named after?
United
What did Harald Bluetooth famously do?
Logo
What does the Bluetooth logo combine?
Name
Who suggested the Bluetooth name in 1997?
Inventor
Which Ericsson engineer led early Bluetooth development?
SIG
What is the Bluetooth SIG?
Band
Which radio band does Bluetooth use?
Hop
How does Bluetooth reduce interference?
Low
What is Bluetooth Low Energy designed for?
Pair
What is pairing?

Explanations: answer key for all 10 questions

Q1: Who is Bluetooth named after?
Answer: Harald Bluetooth, a Danish king
He ruled in the 10th century.
Q2: What did Harald Bluetooth famously do?
Answer: Unite Danish tribes into one kingdom
The tech aims to unite devices.
Q3: What does the Bluetooth logo combine?
Answer: Two runes for Harald's initials
It is a bind rune of H and B.
Q4: Who suggested the Bluetooth name in 1997?
Answer: Intel engineer Jim Kardach
He had been reading about Vikings.
Q5: Which Ericsson engineer led early Bluetooth development?
Answer: Jaap Haartsen
Work began in 1994.
Q6: What is the Bluetooth SIG?
Answer: The group that manages the standard
It was founded in 1998.
Q7: Which radio band does Bluetooth use?
Answer: 2.4 GHz
It shares it with Wi-Fi.
Q8: How does Bluetooth reduce interference?
Answer: By rapidly hopping between frequencies
It switches channels many times per second.
Q9: What is Bluetooth Low Energy designed for?
Answer: Small devices that need long battery life
Fitness trackers use it.
Q10: What is pairing?
Answer: Linking two devices so they trust each other
Codes or prompts confirm the link.

Bluetooth Quiz – Harald Bluetooth and the Wireless Logo

Bluetooth is named after Harald Bluetooth, a 10th-century Danish king who united Danish tribes. Intel engineer Jim Kardach suggested the name in 1997, as the technology aimed to unite devices. The logo combines the runes for Harald's initials, H and B.

Ericsson engineer Jaap Haartsen led early development starting in 1994, and the Bluetooth Special Interest Group, founded in 1998 by companies including Ericsson, IBM, Intel, Nokia and Toshiba, manages the standard.

Bluetooth uses the 2.4 GHz band and hops rapidly between frequencies to reduce interference. Bluetooth Low Energy, introduced in 2010, lets small devices run for months on tiny batteries. Pairing links devices so they trust each other.

What This Quiz Teaches

Tech fans will enjoy these questions.

Where the name comes from
What the logo means
Who developed Bluetooth
How the radio works
How it has evolved

Did You Know?

The name was meant to be temporary.
Bluetooth headsets became popular in the early 2000s.
Range is usually around 10 meters.
Billions of Bluetooth devices ship every year.
Harald's rune stone stands at Jelling, Denmark.