“人臉認證時千萬記得穿衣服”上熱搜，復旦教授提醒

近日，“人臉認證時千萬記得穿衣服”話題沖上熱搜榜，“嚇壞”不少網友。評論區里無數留言都在“悔不當初”，有網友后知后覺表示：完蛋，我在被窩里/上廁所時/光膀子時認證過。

A years-old warning about facial recognition technology has resurfaced and gone viral on Chinese social media, sparking a wave of anxiety among netizens who now realize they may have exposed more than just their faces during online verification.

The hashtag "remember to wear clothes during facial recognition" trended heavily this week, with thousands of netizens expressing regret over their past behavior. Comments flooded in with users admitting they had completed facial recognition checks "while in bed", "on the toilet", or "half naked".

該熱搜新聞援引了“中科院博士張軍平”發表的科普知識，稱大眾在做人臉識別時，上傳系統的不僅是人臉框里的畫面，而是整個攝像頭所覆蓋的區域。

記者搜索發現，引發網友熱議的這個“冷知識”，其實是復旦大學計算與智能創新學院教授張軍平于2021年發布的。

在那條5年前的科普視頻中，張軍平教授提醒大家，千萬不要在洗澡的時候去做人臉認證。他說：“你確確實實要把衣服穿好，攝像頭并不是只看到圓的這一塊的內容，它其實全部都看到了，所以洗澡的時候不要去做人臉認證。”

The renewed concern stems from a video originally posted in 2021 by Zhang Junping, a professor at Fudan University's College of Computer Science and Artificial Intelligence. In the video, which has recently been recirculated, Zhang warned users never to perform facial recognition while bathing or in states of undress.

"You really must wear clothes properly," Zhang said in the video. "The camera doesn't just see the circular area displayed on your screen — it captures the entire field of view. So don't do facial recognition when you're taking a shower."

According to Zhang, the circular frame shown on phone screens during facial verification is merely a "mask" to guide users. The back-end system actually receives the full image captured by the front-facing camera, which typically has a field of view wide enough to capture a user's upper body and surrounding environment.

張教授解釋，人臉認證時，屏幕上所顯示的“攝像頭的圓”其實是起了一個“掩碼”的作用，實際上被拍到的畫面不止于這個“圓”。

記者注意到，張軍平教授的這條視頻在2021年發布時就“爆”了一把，有數萬網友留言進行互動。有人后悔自己曾在上廁所、躺床上時做人臉認證，也有不少人鄭重提出，人臉認證頁面應該發布提示，不然大家都不知道“這種高端操作”。

記者還注意到，2024年曾有網友翻出這個視頻二度科普，相關討論也沖上了熱搜，可見大眾對此話題的強烈關注。

The professor's video initially went viral upon release in 2021, drawing tens of thousands of interactions. It resurfaced again in 2024 and has now returned to public attention, demonstrating sustained public interest in privacy issues surrounding biometric technology.

網友：完了，我裸奔無數次了。

網友：為什么不提醒呢？

復旦大學官網顯示，張軍平是復旦大學計算與智能創新學院教授、博士生導師，中國自動化學會普及工作委員會主任。其研究方向包括人工智能、圖像處理、生物認證、智能交通等，連續五年（2021—2025）入選全球前2%頂尖科學家榜單終身科學影響力排行榜，著有《人工智能的邊界》《人工智能極簡史》《愛犯錯的智能體》《高質量讀研》等書。

自2021年起，張軍平教授在短視頻平臺持續發布科普視頻。他在科普“人臉識別時一定要穿衣服”時，還解釋了為什么人臉識別時需要“搖頭張嘴”。

張軍平教授在視頻中說，這個細節其實涉及到“騙保”問題。“從養老保險開始的，有些人已經去世了，但是可能家里人還希望能繼續拿養老保險，所以就上傳一張人臉照片，導致養老保險出現很大漏洞。那么怎么辦呢？最好的辦法就是讓人‘活’起來，動動眼睛、搖搖頭、張著嘴，這些都表示你是一個活著的人。”

In addition to the clothing warning, Zhang's video also explained why facial recognition systems often require users to perform actions like shaking their heads or opening their mouths — a feature many find inconvenient.

This "liveness detection" technology was developed primarily to prevent pension fraud, Zhang explained. "It started with pension insurance. When someone passed away, family members might continue collecting benefits by simply uploading a photo of the deceased," he said. "The best solution was to make people 'come alive' — moving their eyes, shaking their heads, opening their mouths — to prove they are living individuals".

張教授還在5年前預測，未來也許只會剩下兩個行業：藝術與計算機。

來源：極目新聞 新聞坊 網友評論

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