Unless you are also building your entire hardware from scratch, including the CPU, and writing or auditing all firmware and device drivers, "zero trust" is a fantasy.
Zero trust means verifying everything. Not only has no living person verified the entire technology stack they are using, it is literally impossible to do so for any modern consumer device, since they all contain closed hardware and software that affects the trust model yet cannot be verified in any meaningful sense.
Zero trust means verifying everything. Not only has no living person verified the entire technology stack they are using, it is literally impossible to do so for any modern consumer device, since they all contain closed hardware and software that affects the trust model yet cannot be verified in any meaningful sense.