If your Mac keeps asking for the password every time it wakes up, there are several reasons why this may be happening. One common cause is the security settings on your Mac, which are designed to protect your data and privacy. When your Mac goes to sleep or the screen saver activates, it automatically locks to prevent unauthorized access. When you wake it up, the system prompts you to enter your password to verify your identity.

Another possible reason is that your Mac is set to require a password immediately after sleep or screen saver. You can adjust this setting in System Preferences under Security & Privacy. If the setting is too sensitive, your Mac will prompt you for the password more frequently than you'd like.

Additionally, if you have multiple user accounts on your Mac, the password prompt may be due to switching between accounts. Each user account has its own security settings, so when you switch accounts, the system may require the password to confirm the switch.

It's also worth checking for any pending software updates, as certain issues with system software can cause unexpected password prompts. Keeping your Mac up to date can help resolve any software-related issues that may be causing the repeated password requests.

In some cases, a third-party application or service running in the background may be triggering the password prompt. Review the applications that launch at startup or run in the background to identify any potential culprits.

Ultimately, understanding the reasons behind your Mac's repeated password prompts can help you troubleshoot the issue effectively and ensure the security of your device and data.