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There is no way a user can verify hardware and software.

The only solution is to use multiple air gapped wallets from different manufacturers which use a deterministic algorithm for signatures.

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Did you look at the precursor? They explicit address user verification of the hardware, right down to using simplified translucent PCBs for the keyboard etc. so you can see it hasn’t been tampered, and using an FPGA for the CPU so you know what the processor is doing.

Translucent material is a smokescreen. No user can verify if the wallet is really doing what it is supposed to do by looking at it.

What are you talking about? You can inspect both the hardware and software. If you can verify a ‘deterministic algorithm’, you can verify this.

You verify the deterministic algorithm in a wallet by comparing its output to the output of a wallet by a different manufacturer. It does not need any technical expertise.

That would tell you nothing. The two manufacturers could easily be using the same compromised software or hardware inside the casing.

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