The topic “How much privacy can a photo reveal” has been trending on Sina Weibo， sparking concern and heated discussion about privacy awareness.

In group chats， some people may post their original photos. But that may give away your home address and other information.

Images often contain a lot of information and various traces left by digital cameras or photo manipulation software.

This data， called Exchangeable Image File Format （EXIF）， is a key tool for many professionals. It can detail whether the photographer used a flash， which digital effects were applied to a picture and when the photo was taken. EXIF can also contain the precise GPS coordinates of the location where a photo was taken， according to CNN.

If you take a landscape picture from your window and send the original picture to a group chat， it means that you are releasing your location data to all strangers in the group. They may even accurately infer your house number by analyzing the shooting time and angle.

“一張照片能暴露多少隱私”成為新浪微博熱門話題，這讓大家關(guān)注起隱私問題并展開熱烈討論。

有些人會(huì)在群聊中發(fā)布自己的原圖，但這可能會(huì)泄露其家庭地址和其他信息。

原圖中往往包含大量的信息，以及數(shù)碼相機(jī)或照片處理軟件留下的各種痕跡。

這些數(shù)據(jù)被稱為可交換圖像文件格式（EXIF），對(duì)于許多專業(yè)人士來說，是至關(guān)重要的要素。EXIF能夠詳細(xì)顯示拍攝者是否使用閃光燈、照片使用了哪些數(shù)碼效果，以及照片拍攝于何時(shí)。據(jù)美國(guó)有線電視新聞網(wǎng)報(bào)道，EXIF甚至還能囊括照片拍攝地點(diǎn)的精確GPS坐標(biāo)。

如果你在窗邊拍了一張風(fēng)景照片，然后將原圖發(fā)送到群聊中，這意味著你正向群里所有的陌生人發(fā)布你的位置信息。他們甚至可以通過分析拍攝時(shí)間和角度，準(zhǔn)確地推斷出你所在的門牌號(hào)。

Not just in a group chat， sending an image in a text message， email， or other delivery tools will also include the accompanying information. So how do we protect our privacy when sending photos？

The most effective way is to avoid sending original photos in group chats. Try not to tap the “original picture”. However， photos sent by WeChat Moments are automatically compressed by the system， and they travel without location and other information， according to the WeChat team.

To tackle the problem at its root， we can delete and remove a picture’s EXIF data on a computer. If you are using an iOS smartphone， you can turn off location services for the camera in the privacy settings. If you’re using an Android， the settings vary. Typically， you can go to the setting menu and switch the services off for the camera， according to CTV News.

There is one more thing you can do— photoshop your photos before you share it. What comes with your edited images is photos without stored location data.

不只限于群聊，通過短信、電子郵件或其他傳遞工具發(fā)送圖像，也會(huì)包含相應(yīng)的信息。那么，在發(fā)送照片時(shí)，我們應(yīng)如何保護(hù)自己的隱私呢？

保護(hù)隱私最有效的方法，是避免在群聊中發(fā)送原圖。發(fā)布時(shí)盡量別點(diǎn)擊“原圖”。不過，微信團(tuán)隊(duì)表示，微信朋友圈發(fā)送的照片會(huì)被系統(tǒng)自動(dòng)壓縮，這些照片傳播時(shí)不會(huì)附帶位置等信息。

為了從根本上解決隱私暴露的問題，我們可以在計(jì)算機(jī)上刪除圖片的EXIF數(shù)據(jù)。如果你使用的是iOS智能手機(jī)，你可以在隱私設(shè)置中關(guān)閉攝像頭的定位服務(wù)。如果你使用的是安卓智能手機(jī)，設(shè)置則有所不同。據(jù)加拿大電視臺(tái)新聞報(bào)道，通常情況下，你可以打開設(shè)置菜單，關(guān)閉攝像頭的服務(wù)。

你還可以這樣來保護(hù)隱私——分享照片前先用編輯軟件處理一下，編輯后的圖像就不會(huì)存儲(chǔ)位置數(shù)據(jù)了。

Word Bank

reveal /r?'vi?l/ v. 揭示；顯示

Officers could not reveal how he died.

trace /tre?s/ n. 痕跡；蹤跡

It’s exciting to discover traces of earlier civilizations.

coordinate /k??'??d?ne?t/ n. 坐標(biāo)

compress /k?m'pres/ v. 壓縮（文件等）

tackle /'t?kl/ v. 處理，解決（難題或局面）

Her problem was just too big for her to tackle on her own.