UI button in world space, clickable with cursor mode set to lock.

am using a UI button in 3d world space, where also i have locked my cursor. Without lock it is working as it is intended .but what are the options there are here to make button clickable with mouse locked. I thought of a simple dotted crosshair and am not sure that might work, if that works, then can I get a tutorial or a brief how to use such crosshair. Image is linked, if you didn’t understand what i mean.
Thank You.

VR games do this a lot. You might find some really helpful tutorials in the VR space about “gaze at button to interact.” There’s also a VR/AR/XR group here on the forum.