Apple Watch Constantly Asks for Your Passcode
By default, your Apple Watch will always ask for your passcode whenever you stop wearing it. This ensures you’re the only one who can access its data.
Unfortunately, a common problem with the Apple Watch is that it sometimes asks for your passcode for no reason. If that’s constantly happening to you, the first thing you need to try is to adjust the Apple Watch band.
If your Apple Watch “thinks” you took it off, it will immediately ask for a passcode, which can happen if you wear it too loosely. Moreover, you need to ensure that your sleeves or a piece of clothing are not in the way.
Afterward, you can try changing the settings on your Apple Watch. Open the Watch app on your iPhone and select Passcode, and you can disable Wrist Detection. Just remember that this means anyone could use your Apple Watch even if you don’t have it on your wrist, and for that reason, it will also prevent you from using Apple Pay.