WhatsApp 測試「訪客聊天」功能,沒帳號也能透過連結加入對話

WhatsApp 測試「訪客聊天」功能,沒帳號也能透過連結加入對話
WhatsApp 測試「訪客聊天」功能,沒帳號也能透過連結加入對話

WhatsApp 正測試一項相當特別的新功能:即使對方沒有 WhatsApp 帳號,也能透過連結先聊起來。這項名為「訪客聊天」(Guest Chats)的新設計,目前已開始向部分 Android、iOS 以及網頁 beta 用家推出,讓你可透過分享邀請連結,把沒有註冊 WhatsApp 的人拉進一段臨時對話。

這項功能的核心概念很直接,就是先讓人聊,再慢慢決定是否註冊帳號。對 Meta 而言,「訪客聊天」不只是一個便利功能那麼簡單,感覺上更像是吸引新用家接觸 WhatsApp 的新入口。​

怎樣使用?

根據 WABetaInfo 的說法,用家可在 WhatsApp 的「邀請好友」區域,或聯絡人清單底部生成一條邀請連結,之後透過 SMS 或其他 App 分享出去。收到連結的人可在手機或桌面瀏覽器開啟,然後選擇下載 WhatsApp,或者直接以訪客身份繼續。

若對方選擇以訪客身份加入,系統會在瀏覽器中開啟類似 WhatsApp Web 的對話介面。訪客需要先接受服務條款、輸入名稱,之後才能正式開始聊天,而且真正啟動對話的一方會是收到連結的訪客,而不是發出邀請的 WhatsApp 用家。

仍有端對端加密

即使訪客沒有 WhatsApp 帳號,這類對話仍然採用端對端加密保護。WABetaInfo 指出,當訪客以瀏覽器加入對話時,WhatsApp 網頁端會建立一個獨特識別碼,用來生成加密金鑰,因此 WhatsApp 本身也無法看到訊息內容。

在對話介面中,WhatsApp 也會清楚標示對方是「訪客」,並附上未註冊 WhatsApp 的提示,讓帳號持有人知道目前面對的是一個訪客身份。這種做法有助降低混淆,但並不等於身分已被平台驗證。

最大風險是身分無法確認

「訪客聊天」最大的限制,不是功能少,而是身分可信度較低。由於訪客沒有正式 WhatsApp 帳號,也未經平台驗證,因此只要有人拿到邀請連結,就有可能進入對話。

這代表若連結透過電郵等方式外流,或者原本的收件人已更換號碼、帳戶被入侵,理論上都可能讓其他人加入聊天。也因為如此,這項功能雖然方便,但比較適合用來處理臨時、低敏感度的文字對話,而不適合承載太私密的資訊。

WhatsApp 測試「訪客聊天」功能
WhatsApp 測試「訪客聊天」功能

功能非常克制

現階段的「訪客聊天」功能相當精簡,定位明顯是暫時聊天而不是完整替代 WhatsApp 帳號。根據報道,訪客不能加入群組、不能傳送照片、影片、文件、貼圖、GIF,也不支援語音訊息、語音通話和視像通話。

換句話說,它本質上更接近一個可加密的臨時文字對話入口,而不是完整通訊平台。這樣的限制一方面可降低濫用風險,另一方面也保留了正式註冊帳號後才有的完整功能價值。

10 天沒動作就會失效

「訪客聊天」也不是永久存在的對話。WABetaInfo 指出,這類聊天若 10 天沒有活動,就會自動失效。如果之後還想與同一位訪客繼續溝通,發起人便需要重新產生新的邀請連結。

此外,訪客目前可能無法穩定收到新訊息通知,因此雙方若長時間沒有主動查看聊天內容,訊息有機會被錯過。這也進一步說明,WhatsApp 把它定位成一種短期、過渡性溝通工具,而不是長期聯絡方案。​

仍未公布正式推出時間

目前「訪客聊天」只向少量 beta 用家開放,Meta 暫時未公布正式推出時間表,因此一般用家短期內仍未必能用到這項功能。

不過從方向來看,WhatsApp 顯然正嘗試把「先安裝 App、再註冊帳號、然後才能聊天」這套傳統流程再往後推。對一個已經極度成熟的通訊平台來說,這可能是近年最值得留意的一次使用門檻調整。

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