These functions are specific to PlayStation 4.
Other related reference items 
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initial_user_id ( ) : integerReturns the user ID of the user who launched the application.
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| This function does not accept any parameters. |
integer |
The user ID of the user who launched the application. |
Other related reference items 
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neo_mode ( ) : booleanChecks if the application is running in NEO or Basic mode
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| This function does not accept any parameters. |
boolean |
True if the application is running in NEO mode, or false otherwise. |
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np_id ( user_id ) : stringReturns the SceNpId of the specified player.
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user_id : | integer? | Specifies the ID of the player. Optional. If omitted, the initial player is used. The ? notation indicates that this type is optional: there may be zero or one instances of it. |
string |
Returns the SceNpId of the specified player. |
Other related reference items 
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signed_in ( user_id ) : booleanIndicates whether or not the specified player is signed in.
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user_id : | integer? | Specifies the ID of the player. Optional. If omitted, the initial player is used. The ? notation indicates that this type is optional: there may be zero or one instances of it. |
boolean |
Returns true if the player is signed in. |
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system_service_status ( ) : boolean, booleanRetrieves information about the current status of the application.
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| This function does not accept any parameters. |
boolean |
True if the application is running in the background, or false otherwise. |
boolean |
True if the system software UI is being overlaid, or false otherwise. |