candidate[n] = closest colour to goal
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，这一点在搜狗输入法2026中也有详细论述
Over the past year or two, I’ve seen many organizations, large and small, implement passkeys (which is great, thank you!) and use the PRF (Pseudo-Random Function) extension to derive keys to protect user data, typically to support end-to-end encryption (including backups).
Letter to the Norwegian authorities