- Updated: April 6, 2026
- 1 min read
Why Macs Prompt Random Keys When Connecting a New Keyboard – Explained
When you connect a new keyboard to a Mac, macOS often asks you to press random keys. This security measure, known as the Keyboard Setup Assistant, verifies that the attached device is a genuine input peripheral and not a malicious device trying to capture keystrokes. Apple introduced this feature to protect users from hardware keyloggers and to ensure a smooth pairing experience.
The process works by displaying a short, random sequence of characters on the screen and asking the user to type them on the newly connected keyboard. Once the correct sequence is entered, macOS confirms that the keyboard is functional and registers it as a trusted device. If the sequence is entered incorrectly, the system will prompt again, preventing unauthorized devices from gaining access.
For more details, see the original article Why Macs Ask You to Press Random Keys When Connecting a New Keyboard. Learn how to troubleshoot common issues, such as unresponsive keyboards or repeated prompts, on our Keyboard Support page.
Understanding this security step helps users feel confident that their Mac is protected against hidden hardware threats while maintaining a seamless typing experience.
Andrii Bidochko
CTO UBOS
Andrii Bidochko is an AI entrepreneur and researcher focused on AI agents, reinforcement learning, and autonomous systems. He writes about the technologies shaping the future of machine intelligence, from frontier models and agent architectures to real-world AI applications.