Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Is it important to have a passcode on the watch? If so, Can it be the same as on my passcode on my phone ?

Do you have Apple Pay set up on your watch? It would also give them access to a lot of apps on your phone(e-mail, photos...).

And it can be the same as what's on your phone.
 
Is it important to have a passcode on the watch? If so, Can it be the same as on my passcode on my phone ?
For multiple reasons, I'd say so. Security is a big deal, but if that's not reason enough for you, I believe certain features like Apple Pay are disabled unless you have a passcode set up. Your passcode can be anything you want, including the same passcode as on your phone.
 
Unlock the Mac with the watch? How does that work? News to me.
System Preferences > Security & Privacy > General > the bottom checkbox should say "Allow your Apple Watch to unlock your Mac" - both devices need to use the same iCloud account. There are some hardware requirements as well but unless your Mac is over a decade old I don't think you need to worry about them.

Just be aware that you don't necessarily need to be right in front of your Mac for this to work; depending on your room and Mac position, if you're even a few feet away your Watch could unlock your Mac if, say, someone else bumps it. Activate it depending on your living situation and security needs; it's a very convenient feature, though.
 
System Preferences > Security & Privacy > General > the bottom checkbox should say "Allow your Apple Watch to unlock your Mac" - both devices need to use the same iCloud account. There are some hardware requirements as well but unless your Mac is over a decade old I don't think you need to worry about them.

Just be aware that you don't necessarily need to be right in front of your Mac for this to work; depending on your room and Mac position, if you're even a few feet away your Watch could unlock your Mac if, say, someone else bumps it. Activate it depending on your living situation and security needs; it's a very convenient feature, though.

The watch does alert when the Mac gets unlocked.
 
Yup, one of my favorite little perks of the ecosystem and so handy considering i need a password for my Mac for work.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.