很多人问：“我只要视频，为什么还需要自拍？”这是关于 上传你的照片. The answer is simple: the selfie is protection. This article explains why the check exists and how it works.
Why check the face
The check has three goals:
- make sure the clip features you and not someone else;
- make sure you are 21 or older;
- make sure there is one person in the picture, not several.
没有它，任何人都可以上传熟人或名人的照片，并生成一段与他们有关的露骨视频。这是不可接受的，而且会伤害他人。我们的验证关上了这扇门：你只能用自己的脸通过验证。
检查如何进行
- You upload a photo. The software finds the face, estimates age and size.
- You take a live selfie with the camera. A ready-made file cannot replace it: the shot must be taken now.
- The software compares the two faces and computes how similar they are.
- 如果一切顺利，片段就制作完成。如果不顺利，你会看到明确提示，你的 GEM 会退回。
The whole procedure takes 5 to 10 seconds and is automatic.
Why a live selfie
A camera selfie shows that the person is at the screen now. It is taken right in the browser: you cannot upload a prepared file instead. This confirms the shot is yours and was not found on the internet.
Age 21 and over
Age estimated from a face is approximate, with an error of several years. That is why the threshold is 21, set with a margin. If you are over 21 but were refused, retake the selfie in daylight or choose a sharper photo. The age estimate is not stored and does not go to your profile.
How the software compares faces, without math
Imagine describing a face with measurements: distance between eyes, nose shape, jaw line, brow position and hundreds of fine details. The software does the same and gets a numeric template. It compares the template from the photo with the one from the selfie: the more matches, the higher the similarity. The technology does not search for you among millions and does not look for your face on the internet. It answers one narrow question: are these two faces the same?
False refusals: why they happen
- 照片和自拍上的光线不同；
- different angles, a straight photo and a turned selfie;
- different styling: makeup, beard, glasses, haircut;
- retouching on the photo that the camera does not have;
- a long gap between the pictures;
- a poor camera or a dirty lens.
If you were refused, press "Retake" and take the selfie closer in style to the photo: same angle, similar light. Usually one more attempt is enough.
为什么它无法被绕过
没有这项检查，这个功能就会变成用别人的脸制作露骨片段的工具：熟人、前任、名人。这样的片段会毁掉人生。所以这项检查是强制性的，没有任何绕过办法。谁想自己出现在片段里，几秒钟就能通过。
How to take a good selfie: seven steps
- Face a window or lamp, light should fall on your face.
- 如果照片中你没有戴眼镜和帽子，就摘下它们。
- Hold the camera at eye level.
- 直视镜头。
- 中性表情或淡淡微笑。
- Do not tilt your head far to the side.
- Do not move while shooting.
Special cases
你变了很多
If you are much younger on the photo, or with a different haircut or weight, the check may fail. Update the main photo.
你一直戴着眼镜
Upload a photo with glasses and take the selfie with glasses too, if they do not glare. Turn your head slightly to avoid reflections.
You have a beard
可以，只要照片和自拍里它的长度和形状相似就行。
You shoot in a dark room
Switch on bright light: a phone screen is too weak.
Short answers
Does anyone see my selfie?
No. It is processed automatically and deleted.
我能用现成的文件通过吗？
No, the selfie is taken only from the browser camera.
GEM在拒绝时会发生什么？
它们会自动返回。
The face check makes the feature safe for everyone. Move on to practice: 打开 上传你的照片, and before choosing a picture read the photo tips.