For those who are curious... new nuclear codes are generated DAILY.

[WarGamer]

Here's the process.

And the code can't be viewed without breaking the "biscuit" holding the code.

https://en.wikipedia.org/wiki/Gold_Codes#:~:text=Gold%20Codes%20are%20generated%20daily,States%20Strategic%20Command%20and%20TACAMO.

The Gold Codes are the launch codes for nuclear weapons provided to the president of the United States in his role as commander-in-chief of the armed forces.[1] In conjunction with the nuclear football, the Gold Codes allow the president to authorize a nuclear attack.[2] Gold Codes, as well as a separate nuclear football, are also assigned to the vice president in case the president is incapacitated or otherwise unable to discharge the duties of office pursuant to the Twenty-fifth Amendment to the United States Constitution.[3][4] Gold Codes are arranged in a column and printed on a plastic card nicknamed "the biscuit."[5]

The card's size is similar to that of a credit card, and the president is supposed to carry it on his person. Before it can be read, an opaque plastic covering must be snapped in two and removed.[6]

Gold Codes are generated daily and provided by the National Security Agency (NSA) to the White House, The Pentagon, United States Strategic Command and TACAMO. For an extra level of security, the list of codes on the card includes codes that have no meaning, and therefore the president must memorize where on the list the correct code is located. The concept behind the codes is that they permit the president to positively identify themself as the commander-in-chief and thereby authenticate a launch order to the National Military Command Center (NMCC).[7][8]