[notfed]

Software engineers forget that the general public isn't capable of or willing to generate a private key and keep it secure for the long term. It's a deal breaker. Crypto isn't the answer.

It's also over engineering. A serial number and a registration process can go a long way.

[maxcoder4]

I'm a security engineer and I'm not sure I'm capable of keeping a private key secure for the long term.