Lock manager is a very popular smartapp.
If you haven’t used custom code before, it’s pretty straightforward. Basically you will copy the author’s code and then paste it into your own account. The following FAQ describes that process:
The original FAQ information in this thread refers to the original smartthings architecture, which was in place through the end of 2022 and a little beyond. Custom code was written in the groovy programming language and ran in the smartthings cloud.
As of May 2023, you can no longer add new Groovy DTH‘s or smartapps to your smartthings account. So if you came here because of a link in an old forum thread, or on another site, I’m afraid the Groovy information is no longer usable.
All of this was replaced by a new architecture. Cloud to cloud integrations use the smartthings API. Hub connected devices, mostly Zigbee and zwave, now use “Edge Drivers,” written in the LUA programming language. Here’s the official announcement on those:
The process for using a custom Edge Driver in the new …
In the future, usually the fastest way to find custom code for a specific purpose is to check the quick browse lists in the community – created wiki. In this case, you would look on the list for locks.
http://thingsthataresmart.wiki/index.php?title=How_to_Quick_Browse_the_Community-Created_SmartApps_Forum_Section
