We may earn a commission from links on this page.Garmin is introducing a feature to many of its watches that Apple Watch users have been able to enjoy for a while. Thats a device passcode, so you can lock your data when your watch isnt on your wrist. The feature will be rolling out to Fenix, Forerunner, Venu, and Vivoactive users, or you can get it right now with the beta program. Garmin Vivoactive 5 GPS Smartwatch With AMOLED Display (Black) $239.99 at Best Buy $299.99 Save $60.00 Get Deal Get Deal $239.99 at Best Buy $299.99 Save $60.00 How the Garmin device passcode worksIn the old setupwhat you have right now if you arent on the beta programdevices that have a wallet feature will ask you to set up a passcode to use the wallet. Then, when you tap your watch to use Garmin Pay at a store checkout, youll have to enter a four-digit code.The new update adds the ability to lock your entire watch, not just the wallet. Heres how to turn it on:Enroll in the beta program (more about that below)Go into your Settings menuSelect SystemUnder Passcode, youll have the option for On or Wallet only. Select On if you want to have to enter the passcode each time you put your watch on.What you can and cant do with a Garmin passcodeWith the passcode enabled, youll have to punch in your code when you put your watch on, but otherwise things will work as usualfor you.For someone who doesnt know the code, they can pick up the watch and look at it, but most things beyond the watch face will be locked behind the passcode. To a stranger who doesnt know the code, heres what is still available:The watch face is visible as usualThe light button works to turn the watch face or light on and offIf an activity was running when you took the watch off, it will remain runningYou can still answer a phone callThe flashlight and emergency assistance shortcuts still workAnd here is what is not:The glances (data you reach by scrolling down from the watch face) are lockedThe settings menu is lockedThe activity menu is locked, so you cant start a new activityThe shortcuts menu (hold the top left button on a Forerunner) only contains five options: power off, lock device, turn the touchscreen on or off, flashlight, and emergency assistance.Everything else that might be on that menu, like your wallet, timers, find my phone, etc.all are missing.Which Garmin watches are getting the device passcode feature?Garmin says that the following watches are getting the device passcode feature, so long as you are enrolled in the beta, you have the latest beta software installed, and you have the most recent version of the Garmin Connect app:Enduro 3Fenix 8 (AMOLED or Solar) and Fenix EForerunner 165, 255, 265, 955, and 965, and their variations (including S and Music)Venu 3 and 3SVivoactive 5How to enable the beta to get the passcode featureIf you like getting new Garmin features, Id recommend signing up for the beta. I havent found things to be buggy, although thats always a risk with any beta program.Garmins instructions for enrolling in the beta program are here. Basically, youll use your Garmin Connect app to select your device, then tap Join Beta Software Program, and agree to the terms.Within an hour, you should be able to install the latest software. To check for an update at any time, go into the Settings menu on your device, then System, Software Updates, and Check for Updates.