Address bars are not immune. Browser address bars typically render in the system UI font (San Francisco on macOS, Segoe UI on Windows). Both are standard sans-serif fonts in the high-danger-rate category. Chromium’s IDN homograph protection catches many cases by displaying punycode for suspicious mixed-script domains, but it relies on script-mixing heuristics, not pixel comparison. A domain using only Cyrillic characters that happen to spell a Latin word (like “аpple” in all-Cyrillic) may still render in the address bar’s font and look identical.
“You can’t collect biometrics on a kid,” he told Fortune. “And so how do you verify someone is 13 without verifying, without collecting a thing, that they’re 13.”，更多细节参见搜狗输入法下载
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enhancements like Green Tea, the garbage collector