Comparison would be most suitable. I hope I could be a help
Answer:
beacon
Explanation:
At regular intervals the AP in an infrastructure network or wireless device in an adhoc network sends a beacon frame both to announce its presence and to provide the necessary information for other devices to join the network.
It’s a piece of hardware (you can touch it) that changes something on the screen. Examples are a keyboard putting letters on the screen or a mouse moving the cursor
Your parents,your school,google,your social media accounts
