Close to Metal

Close to Metal is a companion perk in Fallout 4.

Obtaining
To gain the perk, the Sole Survivor must reach maximum affinity with Nick Valentine after completing his personal quest.

Effects
The player character has 1 more guess to dial the password in terminals. Also, terminals have 50% less time to be reset after failed hacking.

Bugs

 * The extra guess does not stack with the Science bobblehead.

Behind the scenes
In computing, "Close To Metal" is an idiom for the lowest level software operations of a computer. It is also the name of a beta version of a low-level programming interface developed by ATI, now the AMD Graphics Product Group.

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