en.wikipedia.org/wiki/Nitrokey

The statement says all Nitrokey hardware and software are open-source, but Nitrokey’s own materials show that this is not true across the product line.

• For Nitrokey 3, Nitrokey documents that it includes the NXP SE050 secure element. In an official Nitrokey support reply, staff explicitly state that a secure element like the SE050 is “closed source.”
• For Nitrokey HSM 2, an official Nitrokey support reply states that the HSM smart card’s firmware “is closed-source, not directly modifiable.”

So while Nitrokey emphasizes open-source tools and publishes a lot of code and hardware information, the categorical claim that the hardware and software of Nitrokey are open-source is inaccurate as written.

Nitrokey’s official launch post is dated 1.9.2015 and says: “Nitrokey Pro, Nitrokey HSM, Nitrokey U2F and Nitrokey Start are now available. ... All products can be ordered now in our online shop.” That directly contradicts the Wikipedia text’s date of 18 September 2015.

The same post’s comments also show that Nitrokey Storage was not yet available at that time, which matches Nitrokey’s framing that four models were already on sale while Storage was still pending.