1. Observe the reflection: under the reflection of the genuine signature, the ink protrudes a little and has a certain thickness. If you still can't see it, you can gently wipe it with a paper towel dipped in water.
2. Pay attention to the fluency of fonts: if the flow is flowing and there is no jam, the high probability is to sign it in person.
3. Observe whether there is any place with high recognition: Some signatures with recognition, such as Lu Han and Yang Mi, are cautious about their artistic photos. Lu Han added antlers to her own path, and wrote two English letters mi in the lower right corner of her art photo.
4. Going to official website is another way to check the original copies: if they are very similar (80% is enough, it is impossible to write the same name for every name).
It should be noted that at present, most of the signatures on the market are resold by issuing tickets. This source is difficult to distinguish between true and false, and there are many false signatures, so the price is also an important factor to judge the authenticity of the signature. In a word, it is best to observe and study more and combine various methods to identify signatures.