Shared Selector

The Shared Selector is a consolidation between attributes or properties for all the technologies, so you don't need to use different selector for each technology. Here is an common example:

Without shared selector:

[Selector("[AutomationId='My Id']", Technology.Desktop)]
[Selector("[id='My Id']", Technology.Web)]
public IButton MyButton { get; set; }

With shared selector:

[Selector("[Id='My Id']")]
public IButton MyButton { get; set; }

Shared Selector Table

Attribute/Property	Web	Desktop	Shared
The control's id	id	AutomationId	Id